Refactor syncapi.h

chrome/browser/sync/engine/syncapi.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/sync/engine/syncapi.h"
-
-#include <algorithm>
-#include <bitset>
-#include <iomanip>
-#include <list>
-#include <map>
-#include <queue>
-#include <string>
-#include <vector>
-
-#include "base/base64.h"
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/command_line.h"
-#include "base/compiler_specific.h"
-#include "base/json/json_writer.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/message_loop.h"
-#include "base/observer_list.h"
-#include "base/sha1.h"
-#include "base/string_number_conversions.h"
-#include "base/string_util.h"
-#include "base/threading/thread_checker.h"
-#include "base/time.h"
-#include "base/tracked.h"
-#include "base/utf_string_conversions.h"
-#include "base/values.h"
-#include "chrome/browser/sync/engine/all_status.h"
-#include "chrome/browser/sync/engine/change_reorder_buffer.h"
-#include "chrome/browser/sync/engine/http_post_provider_factory.h"
-#include "chrome/browser/sync/engine/model_safe_worker.h"
-#include "chrome/browser/sync/engine/nigori_util.h"
-#include "chrome/browser/sync/engine/nudge_source.h"
-#include "chrome/browser/sync/engine/net/server_connection_manager.h"
-#include "chrome/browser/sync/engine/net/syncapi_server_connection_manager.h"
-#include "chrome/browser/sync/engine/nudge_source.h"
-#include "chrome/browser/sync/engine/sync_scheduler.h"
-#include "chrome/browser/sync/engine/syncer.h"
-#include "chrome/browser/sync/js/js_arg_list.h"
-#include "chrome/browser/sync/js/js_backend.h"
-#include "chrome/browser/sync/js/js_event_details.h"
-#include "chrome/browser/sync/js/js_event_handler.h"
-#include "chrome/browser/sync/js/js_reply_handler.h"
-#include "chrome/browser/sync/js/js_sync_manager_observer.h"
-#include "chrome/browser/sync/js/js_transaction_observer.h"
-#include "chrome/browser/sync/notifier/sync_notifier.h"
-#include "chrome/browser/sync/notifier/sync_notifier_observer.h"
-#include "chrome/browser/sync/protocol/app_specifics.pb.h"
-#include "chrome/browser/sync/protocol/autofill_specifics.pb.h"
-#include "chrome/browser/sync/protocol/bookmark_specifics.pb.h"
-#include "chrome/browser/sync/protocol/extension_specifics.pb.h"
-#include "chrome/browser/sync/protocol/nigori_specifics.pb.h"
-#include "chrome/browser/sync/protocol/preference_specifics.pb.h"
-#include "chrome/browser/sync/protocol/proto_value_conversions.h"
-#include "chrome/browser/sync/protocol/service_constants.h"
-#include "chrome/browser/sync/protocol/session_specifics.pb.h"
-#include "chrome/browser/sync/protocol/sync.pb.h"
-#include "chrome/browser/sync/protocol/theme_specifics.pb.h"
-#include "chrome/browser/sync/protocol/typed_url_specifics.pb.h"
-#include "chrome/browser/sync/sessions/sync_session.h"
-#include "chrome/browser/sync/sessions/sync_session_context.h"
-#include "chrome/browser/sync/syncable/directory_change_delegate.h"
-#include "chrome/browser/sync/syncable/directory_manager.h"
-#include "chrome/browser/sync/syncable/model_type.h"
-#include "chrome/browser/sync/syncable/model_type_payload_map.h"
-#include "chrome/browser/sync/syncable/syncable.h"
-#include "chrome/browser/sync/weak_handle.h"
-#include "chrome/common/chrome_switches.h"
-#include "net/base/network_change_notifier.h"
-
-using base::TimeDelta;
-using browser_sync::AllStatus;
-using browser_sync::Cryptographer;
-using browser_sync::JsArgList;
-using browser_sync::JsBackend;
-using browser_sync::JsEventDetails;
-using browser_sync::JsEventHandler;
-using browser_sync::JsReplyHandler;
-using browser_sync::JsSyncManagerObserver;
-using browser_sync::JsTransactionObserver;
-using browser_sync::MakeWeakHandle;
-using browser_sync::WeakHandle;
-using browser_sync::KeyParams;
-using browser_sync::ModelSafeRoutingInfo;
-using browser_sync::ModelSafeWorker;
-using browser_sync::ModelSafeWorkerRegistrar;
-using browser_sync::ServerConnectionEvent;
-using browser_sync::ServerConnectionEventListener;
-using browser_sync::SyncEngineEvent;
-using browser_sync::SyncEngineEventListener;
-using browser_sync::Syncer;
-using browser_sync::SyncScheduler;
-using browser_sync::kNigoriTag;
-using browser_sync::sessions::SyncSessionContext;
-using std::list;
-using std::hex;
-using std::string;
-using std::vector;
-using syncable::Directory;
-using syncable::DirectoryManager;
-using syncable::Entry;
-using syncable::EntryKernelMutationSet;
-using syncable::kEncryptedString;
-using syncable::ModelType;
-using syncable::ModelTypeBitSet;
-using syncable::WriterTag;
-using syncable::SPECIFICS;
-using sync_pb::AutofillProfileSpecifics;
-
-namespace {
-
-typedef GoogleServiceAuthError AuthError;
-
-static const int kThreadExitTimeoutMsec = 60000;
-static const int kSSLPort = 443;
-static const int kSyncSchedulerDelayMsec = 250;
-
-#if defined(OS_CHROMEOS)
-static const int kChromeOSNetworkChangeReactionDelayHackMsec = 5000;
-#endif  // OS_CHROMEOS
-
-}  // namespace
-
-namespace sync_api {
-
-static const FilePath::CharType kBookmarkSyncUserSettingsDatabase[] =
-    FILE_PATH_LITERAL("BookmarkSyncSettings.sqlite3");
-static const char kDefaultNameForNewNodes[] = " ";
-
-// The list of names which are reserved for use by the server.
-static const char* kForbiddenServerNames[] = { "", ".", ".." };
-
-//////////////////////////////////////////////////////////////////////////
-// Static helper functions.
-
-// Helper function to look up the int64 metahandle of an object given the ID
-// string.
-static int64 IdToMetahandle(syncable::BaseTransaction* trans,
-                            const syncable::Id& id) {
-  syncable::Entry entry(trans, syncable::GET_BY_ID, id);
-  if (!entry.good())
-    return kInvalidId;
-  return entry.Get(syncable::META_HANDLE);
-}
-
-// Checks whether |name| is a server-illegal name followed by zero or more space
-// characters.  The three server-illegal names are the empty string, dot, and
-// dot-dot.  Very long names (>255 bytes in UTF-8 Normalization Form C) are
-// also illegal, but are not considered here.
-static bool IsNameServerIllegalAfterTrimming(const std::string& name) {
-  size_t untrimmed_count = name.find_last_not_of(' ') + 1;
-  for (size_t i = 0; i < arraysize(kForbiddenServerNames); ++i) {
-    if (name.compare(0, untrimmed_count, kForbiddenServerNames[i]) == 0)
-      return true;
-  }
-  return false;
-}
-
-static bool EndsWithSpace(const std::string& string) {
-  return !string.empty() && *string.rbegin() == ' ';
-}
-
-// When taking a name from the syncapi, append a space if it matches the
-// pattern of a server-illegal name followed by zero or more spaces.
-static void SyncAPINameToServerName(const std::wstring& sync_api_name,
-                                    std::string* out) {
-  *out = WideToUTF8(sync_api_name);
-  if (IsNameServerIllegalAfterTrimming(*out))
-    out->append(" ");
-}
-
-// In the reverse direction, if a server name matches the pattern of a
-// server-illegal name followed by one or more spaces, remove the trailing
-// space.
-static void ServerNameToSyncAPIName(const std::string& server_name,
-                                    std::string* out) {
-  CHECK(out);
-  int length_to_copy = server_name.length();
-  if (IsNameServerIllegalAfterTrimming(server_name) &&
-      EndsWithSpace(server_name)) {
-    --length_to_copy;
-  }
-  *out = std::string(server_name.c_str(), length_to_copy);
-}
-
-// Compare the values of two EntitySpecifics, accounting for encryption.
-static bool AreSpecificsEqual(const browser_sync::Cryptographer* cryptographer,
-                              const sync_pb::EntitySpecifics& left,
-                              const sync_pb::EntitySpecifics& right) {
-  // Note that we can't compare encrypted strings directly as they are seeded
-  // with a random value.
-  std::string left_plaintext, right_plaintext;
-  if (left.has_encrypted()) {
-    if (!cryptographer->CanDecrypt(left.encrypted())) {
-      NOTREACHED() << "Attempting to compare undecryptable data.";
-      return false;
-    }
-    left_plaintext = cryptographer->DecryptToString(left.encrypted());
-  } else {
-    left_plaintext = left.SerializeAsString();
-  }
-  if (right.has_encrypted()) {
-    if (!cryptographer->CanDecrypt(right.encrypted())) {
-      NOTREACHED() << "Attempting to compare undecryptable data.";
-      return false;
-    }
-    right_plaintext = cryptographer->DecryptToString(right.encrypted());
-  } else {
-    right_plaintext = right.SerializeAsString();
-  }
-  if (left_plaintext == right_plaintext) {
-    return true;
-  }
-  return false;
-}
-
-// Helper function that converts a PassphraseRequiredReason value to a string.
-std::string PassphraseRequiredReasonToString(
-    PassphraseRequiredReason reason) {
-  switch (reason) {
-    case REASON_PASSPHRASE_NOT_REQUIRED:
-      return "REASON_PASSPHRASE_NOT_REQUIRED";
-    case REASON_ENCRYPTION:
-      return "REASON_ENCRYPTION";
-    case REASON_DECRYPTION:
-      return "REASON_DECRYPTION";
-    case REASON_SET_PASSPHRASE_FAILED:
-      return "REASON_SET_PASSPHRASE_FAILED";
-    default:
-      NOTREACHED();
-      return "INVALID_REASON";
-  }
-}
-
-// Helper function to determine if initial sync had ended for types.
-bool InitialSyncEndedForTypes(syncable::ModelTypeSet types,
-                              sync_api::UserShare* share) {
-  syncable::ScopedDirLookup lookup(share->dir_manager.get(),
-                                   share->name);
-  if (!lookup.good()) {
-    DCHECK(false) << "ScopedDirLookup failed when checking initial sync";
-    return false;
-  }
-
-  for (syncable::ModelTypeSet::const_iterator i = types.begin();
-       i != types.end(); ++i) {
-    if (!lookup->initial_sync_ended_for_type(*i))
-      return false;
-  }
-  return true;
-}
-
-
-UserShare::UserShare() {}
-
-UserShare::~UserShare() {}
-
-////////////////////////////////////
-// BaseNode member definitions.
-
-BaseNode::BaseNode() : password_data_(new sync_pb::PasswordSpecificsData) {}
-
-BaseNode::~BaseNode() {}
-
-std::string BaseNode::GenerateSyncableHash(
-    syncable::ModelType model_type, const std::string& client_tag) {
-  // blank PB with just the extension in it has termination symbol,
-  // handy for delimiter
-  sync_pb::EntitySpecifics serialized_type;
-  syncable::AddDefaultExtensionValue(model_type, &serialized_type);
-  std::string hash_input;
-  serialized_type.AppendToString(&hash_input);
-  hash_input.append(client_tag);
-
-  std::string encode_output;
-  CHECK(base::Base64Encode(base::SHA1HashString(hash_input), &encode_output));
-  return encode_output;
-}
-
-sync_pb::PasswordSpecificsData* DecryptPasswordSpecifics(
-    const sync_pb::EntitySpecifics& specifics, Cryptographer* crypto) {
-  if (!specifics.HasExtension(sync_pb::password))
-    return NULL;
-  const sync_pb::PasswordSpecifics& password_specifics =
-      specifics.GetExtension(sync_pb::password);
-  if (!password_specifics.has_encrypted())
-    return NULL;
-  const sync_pb::EncryptedData& encrypted = password_specifics.encrypted();
-  scoped_ptr<sync_pb::PasswordSpecificsData> data(
-      new sync_pb::PasswordSpecificsData);
-  if (!crypto->Decrypt(encrypted, data.get()))
-    return NULL;
-  return data.release();
-}
-
-bool BaseNode::DecryptIfNecessary() {
-  if (!GetEntry()->Get(syncable::UNIQUE_SERVER_TAG).empty())
-      return true;  // Ignore unique folders.
-  const sync_pb::EntitySpecifics& specifics =
-      GetEntry()->Get(syncable::SPECIFICS);
-  if (specifics.HasExtension(sync_pb::password)) {
-    // Passwords have their own legacy encryption structure.
-    scoped_ptr<sync_pb::PasswordSpecificsData> data(DecryptPasswordSpecifics(
-        specifics, GetTransaction()->GetCryptographer()));
-    if (!data.get()) {
-      LOG(ERROR) << "Failed to decrypt password specifics.";
-      return false;
-    }
-    password_data_.swap(data);
-    return true;
-  }
-
-  // We assume any node with the encrypted field set has encrypted data.
-  if (!specifics.has_encrypted())
-    return true;
-
-  const sync_pb::EncryptedData& encrypted =
-      specifics.encrypted();
-  std::string plaintext_data = GetTransaction()->GetCryptographer()->
-      DecryptToString(encrypted);
-  if (plaintext_data.length() == 0 ||
-      !unencrypted_data_.ParseFromString(plaintext_data)) {
-    LOG(ERROR) << "Failed to decrypt encrypted node of type " <<
-      syncable::ModelTypeToString(GetModelType()) << ".";
-    return false;
-  }
-  VLOG(2) << "Decrypted specifics of type "
-          << syncable::ModelTypeToString(GetModelType())
-          << " with content: " << plaintext_data;
-  return true;
-}
-
-const sync_pb::EntitySpecifics& BaseNode::GetUnencryptedSpecifics(
-    const syncable::Entry* entry) const {
-  const sync_pb::EntitySpecifics& specifics = entry->Get(SPECIFICS);
-  if (specifics.has_encrypted()) {
-    DCHECK(syncable::GetModelTypeFromSpecifics(unencrypted_data_) !=
-           syncable::UNSPECIFIED);
-    return unencrypted_data_;
-  } else {
-    DCHECK(syncable::GetModelTypeFromSpecifics(unencrypted_data_) ==
-           syncable::UNSPECIFIED);
-    return specifics;
-  }
-}
-
-int64 BaseNode::GetParentId() const {
-  return IdToMetahandle(GetTransaction()->GetWrappedTrans(),
-                        GetEntry()->Get(syncable::PARENT_ID));
-}
-
-int64 BaseNode::GetId() const {
-  return GetEntry()->Get(syncable::META_HANDLE);
-}
-
-int64 BaseNode::GetModificationTime() const {
-  return GetEntry()->Get(syncable::MTIME);
-}
-
-bool BaseNode::GetIsFolder() const {
-  return GetEntry()->Get(syncable::IS_DIR);
-}
-
-std::string BaseNode::GetTitle() const {
-  std::string result;
-  // TODO(zea): refactor bookmarks to not need this functionality.
-  if (syncable::BOOKMARKS == GetModelType() &&
-      GetEntry()->Get(syncable::SPECIFICS).has_encrypted()) {
-    // Special case for legacy bookmarks dealing with encryption.
-    ServerNameToSyncAPIName(GetBookmarkSpecifics().title(), &result);
-  } else {
-    ServerNameToSyncAPIName(GetEntry()->Get(syncable::NON_UNIQUE_NAME),
-                            &result);
-  }
-  return result;
-}
-
-GURL BaseNode::GetURL() const {
-  return GURL(GetBookmarkSpecifics().url());
-}
-
-int64 BaseNode::GetPredecessorId() const {
-  syncable::Id id_string = GetEntry()->Get(syncable::PREV_ID);
-  if (id_string.IsRoot())
-    return kInvalidId;
-  return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string);
-}
-
-int64 BaseNode::GetSuccessorId() const {
-  syncable::Id id_string = GetEntry()->Get(syncable::NEXT_ID);
-  if (id_string.IsRoot())
-    return kInvalidId;
-  return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string);
-}
-
-int64 BaseNode::GetFirstChildId() const {
-  syncable::Directory* dir = GetTransaction()->GetLookup();
-  syncable::BaseTransaction* trans = GetTransaction()->GetWrappedTrans();
-  syncable::Id id_string =
-      dir->GetFirstChildId(trans, GetEntry()->Get(syncable::ID));
-  if (id_string.IsRoot())
-    return kInvalidId;
-  return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string);
-}
-
-DictionaryValue* BaseNode::GetSummaryAsValue() const {
-  DictionaryValue* node_info = new DictionaryValue();
-  node_info->SetString("id", base::Int64ToString(GetId()));
-  node_info->SetBoolean("isFolder", GetIsFolder());
-  node_info->SetString("title", GetTitle());
-  node_info->Set("type", ModelTypeToValue(GetModelType()));
-  return node_info;
-}
-
-DictionaryValue* BaseNode::GetDetailsAsValue() const {
-  DictionaryValue* node_info = GetSummaryAsValue();
-  // TODO(akalin): Return time in a better format.
-  node_info->SetString("modificationTime",
-                       base::Int64ToString(GetModificationTime()));
-  node_info->SetString("parentId", base::Int64ToString(GetParentId()));
-  // Specifics are already in the Entry value, so no need to duplicate
-  // it here.
-  node_info->SetString("externalId",
-                       base::Int64ToString(GetExternalId()));
-  node_info->SetString("predecessorId",
-                       base::Int64ToString(GetPredecessorId()));
-  node_info->SetString("successorId",
-                       base::Int64ToString(GetSuccessorId()));
-  node_info->SetString("firstChildId",
-                       base::Int64ToString(GetFirstChildId()));
-  node_info->Set("entry", GetEntry()->ToValue());
-  return node_info;
-}
-
-void BaseNode::GetFaviconBytes(std::vector<unsigned char>* output) const {
-  if (!output)
-    return;
-  const std::string& favicon = GetBookmarkSpecifics().favicon();
-  output->assign(reinterpret_cast<const unsigned char*>(favicon.data()),
-      reinterpret_cast<const unsigned char*>(favicon.data() +
-                                             favicon.length()));
-}
-
-int64 BaseNode::GetExternalId() const {
-  return GetEntry()->Get(syncable::LOCAL_EXTERNAL_ID);
-}
-
-const sync_pb::AppSpecifics& BaseNode::GetAppSpecifics() const {
-  DCHECK_EQ(syncable::APPS, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::app);
-}
-
-const sync_pb::AutofillSpecifics& BaseNode::GetAutofillSpecifics() const {
-  DCHECK_EQ(syncable::AUTOFILL, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::autofill);
-}
-
-const AutofillProfileSpecifics& BaseNode::GetAutofillProfileSpecifics() const {
-  DCHECK_EQ(GetModelType(), syncable::AUTOFILL_PROFILE);
-  return GetEntitySpecifics().GetExtension(sync_pb::autofill_profile);
-}
-
-const sync_pb::BookmarkSpecifics& BaseNode::GetBookmarkSpecifics() const {
-  DCHECK_EQ(syncable::BOOKMARKS, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::bookmark);
-}
-
-const sync_pb::NigoriSpecifics& BaseNode::GetNigoriSpecifics() const {
-  DCHECK_EQ(syncable::NIGORI, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::nigori);
-}
-
-const sync_pb::PasswordSpecificsData& BaseNode::GetPasswordSpecifics() const {
-  DCHECK_EQ(syncable::PASSWORDS, GetModelType());
-  return *password_data_;
-}
-
-const sync_pb::ThemeSpecifics& BaseNode::GetThemeSpecifics() const {
-  DCHECK_EQ(syncable::THEMES, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::theme);
-}
-
-const sync_pb::TypedUrlSpecifics& BaseNode::GetTypedUrlSpecifics() const {
-  DCHECK_EQ(syncable::TYPED_URLS, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::typed_url);
-}
-
-const sync_pb::ExtensionSpecifics& BaseNode::GetExtensionSpecifics() const {
-  DCHECK_EQ(syncable::EXTENSIONS, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::extension);
-}
-
-const sync_pb::SessionSpecifics& BaseNode::GetSessionSpecifics() const {
-  DCHECK_EQ(syncable::SESSIONS, GetModelType());
-  return GetEntitySpecifics().GetExtension(sync_pb::session);
-}
-
-const sync_pb::EntitySpecifics& BaseNode::GetEntitySpecifics() const {
-  return GetUnencryptedSpecifics(GetEntry());
-}
-
-syncable::ModelType BaseNode::GetModelType() const {
-  return GetEntry()->GetModelType();
-}
-
-void BaseNode::SetUnencryptedSpecifics(
-    const sync_pb::EntitySpecifics& specifics) {
-  syncable::ModelType type = syncable::GetModelTypeFromSpecifics(specifics);
-  DCHECK_NE(syncable::UNSPECIFIED, type);
-  if (GetModelType() != syncable::UNSPECIFIED) {
-    DCHECK_EQ(GetModelType(), type);
-  }
-  unencrypted_data_.CopyFrom(specifics);
-}
-
-////////////////////////////////////
-// WriteNode member definitions
-// Static.
-bool WriteNode::UpdateEntryWithEncryption(
-    browser_sync::Cryptographer* cryptographer,
-    const sync_pb::EntitySpecifics& new_specifics,
-    syncable::MutableEntry* entry) {
-  syncable::ModelType type = syncable::GetModelTypeFromSpecifics(new_specifics);
-  DCHECK_GE(type, syncable::FIRST_REAL_MODEL_TYPE);
-  syncable::ModelTypeSet encrypted_types = cryptographer->GetEncryptedTypes();
-
-  sync_pb::EntitySpecifics generated_specifics;
-  if (type == syncable::PASSWORDS ||        // Has own encryption scheme.
-      type == syncable::NIGORI ||           // Encrypted separately.
-      encrypted_types.count(type) == 0 ||
-      new_specifics.has_encrypted()) {
-    // No encryption required.
-    generated_specifics.CopyFrom(new_specifics);
-  } else {
-    // Encrypt new_specifics into generated_specifics.
-    if (VLOG_IS_ON(2)) {
-      scoped_ptr<DictionaryValue> value(entry->ToValue());
-      std::string info;
-      base::JSONWriter::Write(value.get(), true, &info);
-      VLOG(2) << "Encrypting specifics of type "
-              << syncable::ModelTypeToString(type)
-              << " with content: "
-              << info;
-    }
-    if (!cryptographer->is_initialized())
-      return false;
-    syncable::AddDefaultExtensionValue(type, &generated_specifics);
-    if (!cryptographer->Encrypt(new_specifics,
-                                generated_specifics.mutable_encrypted())) {
-      NOTREACHED() << "Could not encrypt data for node of type "
-                   << syncable::ModelTypeToString(type);
-      return false;
-    }
-  }
-
-  const sync_pb::EntitySpecifics& old_specifics = entry->Get(SPECIFICS);
-  if (AreSpecificsEqual(cryptographer, old_specifics, generated_specifics)) {
-    // Even if the data is the same but the old specifics are encrypted with an
-    // old key, we should go ahead and re-encrypt with the new key.
-    if ((!old_specifics.has_encrypted() &&
-         !generated_specifics.has_encrypted()) ||
-         cryptographer->CanDecryptUsingDefaultKey(old_specifics.encrypted())) {
-      VLOG(2) << "Specifics of type " << syncable::ModelTypeToString(type)
-              << " already match, dropping change.";
-      return true;
-    }
-    // TODO(zea): Add some way to keep track of how often we're reencrypting
-    // because of a passphrase change.
-  }
-
-  if (generated_specifics.has_encrypted()) {
-    // Overwrite the possibly sensitive non-specifics data.
-    entry->Put(syncable::NON_UNIQUE_NAME, kEncryptedString);
-    // For bookmarks we actually put bogus data into the unencrypted specifics,
-    // else the server will try to do it for us.
-    if (type == syncable::BOOKMARKS) {
-      sync_pb::BookmarkSpecifics* bookmark_specifics =
-          generated_specifics.MutableExtension(sync_pb::bookmark);
-      if (!entry->Get(syncable::IS_DIR))
-        bookmark_specifics->set_url(kEncryptedString);
-      bookmark_specifics->set_title(kEncryptedString);
-    }
-  }
-  entry->Put(syncable::SPECIFICS, generated_specifics);
-  syncable::MarkForSyncing(entry);
-  return true;
-}
-
-void WriteNode::SetIsFolder(bool folder) {
-  if (entry_->Get(syncable::IS_DIR) == folder)
-    return;  // Skip redundant changes.
-
-  entry_->Put(syncable::IS_DIR, folder);
-  MarkForSyncing();
-}
-
-void WriteNode::SetTitle(const std::wstring& title) {
-  std::string server_legal_name;
-  SyncAPINameToServerName(title, &server_legal_name);
-
-  string old_name = entry_->Get(syncable::NON_UNIQUE_NAME);
-
-  if (server_legal_name == old_name)
-    return;  // Skip redundant changes.
-
-  // Only set NON_UNIQUE_NAME to the title if we're not encrypted.
-  if (GetEntitySpecifics().has_encrypted())
-    entry_->Put(syncable::NON_UNIQUE_NAME, kEncryptedString);
-  else
-    entry_->Put(syncable::NON_UNIQUE_NAME, server_legal_name);
-
-  // For bookmarks, we also set the title field in the specifics.
-  // TODO(zea): refactor bookmarks to not need this functionality.
-  if (GetModelType() == syncable::BOOKMARKS) {
-    sync_pb::BookmarkSpecifics new_value = GetBookmarkSpecifics();
-    new_value.set_title(server_legal_name);
-    SetBookmarkSpecifics(new_value);  // Does it's own encryption checking.
-  }
-
-  MarkForSyncing();
-}
-
-void WriteNode::SetURL(const GURL& url) {
-  sync_pb::BookmarkSpecifics new_value = GetBookmarkSpecifics();
-  new_value.set_url(url.spec());
-  SetBookmarkSpecifics(new_value);
-}
-
-void WriteNode::SetAppSpecifics(
-    const sync_pb::AppSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::app)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetAutofillSpecifics(
-    const sync_pb::AutofillSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::autofill)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetAutofillProfileSpecifics(
-    const sync_pb::AutofillProfileSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::autofill_profile)->
-      CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetBookmarkSpecifics(
-    const sync_pb::BookmarkSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::bookmark)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetNigoriSpecifics(
-    const sync_pb::NigoriSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::nigori)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetPasswordSpecifics(
-    const sync_pb::PasswordSpecificsData& data) {
-  DCHECK_EQ(syncable::PASSWORDS, GetModelType());
-
-  Cryptographer* cryptographer = GetTransaction()->GetCryptographer();
-
-  // Idempotency check to prevent unnecessary syncing: if the plaintexts match
-  // and the old ciphertext is encrypted with the most current key, there's
-  // nothing to do here.  Because each encryption is seeded with a different
-  // random value, checking for equivalence post-encryption doesn't suffice.
-  const sync_pb::EncryptedData& old_ciphertext =
-      GetEntry()->Get(SPECIFICS).GetExtension(sync_pb::password).encrypted();
-  scoped_ptr<sync_pb::PasswordSpecificsData> old_plaintext(
-      DecryptPasswordSpecifics(GetEntry()->Get(SPECIFICS), cryptographer));
-  if (old_plaintext.get() &&
-      old_plaintext->SerializeAsString() == data.SerializeAsString() &&
-      cryptographer->CanDecryptUsingDefaultKey(old_ciphertext)) {
-    return;
-  }
-
-  sync_pb::PasswordSpecifics new_value;
-  if (!cryptographer->Encrypt(data, new_value.mutable_encrypted())) {
-    NOTREACHED() << "Failed to encrypt password, possibly due to sync node "
-                 << "corruption";
-    return;
-  }
-
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::password)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetThemeSpecifics(
-    const sync_pb::ThemeSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::theme)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetSessionSpecifics(
-    const sync_pb::SessionSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::session)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetEntitySpecifics(
-    const sync_pb::EntitySpecifics& new_value) {
-  syncable::ModelType new_specifics_type =
-      syncable::GetModelTypeFromSpecifics(new_value);
-  DCHECK_NE(new_specifics_type, syncable::UNSPECIFIED);
-  VLOG(1) << "Writing entity specifics of type "
-          << syncable::ModelTypeToString(new_specifics_type);
-  // GetModelType() can be unspecified if this is the first time this
-  // node is being initialized (see PutModelType()).  Otherwise, it
-  // should match |new_specifics_type|.
-  if (GetModelType() != syncable::UNSPECIFIED) {
-    DCHECK_EQ(new_specifics_type, GetModelType());
-  }
-  browser_sync::Cryptographer* cryptographer =
-      GetTransaction()->GetCryptographer();
-
-  // Preserve unknown fields.
-  const sync_pb::EntitySpecifics& old_specifics = entry_->Get(SPECIFICS);
-  sync_pb::EntitySpecifics new_specifics;
-  new_specifics.CopyFrom(new_value);
-  new_specifics.mutable_unknown_fields()->MergeFrom(
-      old_specifics.unknown_fields());
-
-  // Will update the entry if encryption was necessary.
-  if (!UpdateEntryWithEncryption(cryptographer, new_specifics, entry_)) {
-    return;
-  }
-  if (entry_->Get(SPECIFICS).has_encrypted()) {
-    // EncryptIfNecessary already updated the entry for us and marked for
-    // syncing if it was needed. Now we just make a copy of the unencrypted
-    // specifics so that if this node is updated, we do not have to decrypt the
-    // old data. Note that this only modifies the node's local data, not the
-    // entry itself.
-    SetUnencryptedSpecifics(new_value);
-  }
-
-  DCHECK_EQ(new_specifics_type, GetModelType());
-}
-
-void WriteNode::ResetFromSpecifics() {
-  SetEntitySpecifics(GetEntitySpecifics());
-}
-
-void WriteNode::SetTypedUrlSpecifics(
-    const sync_pb::TypedUrlSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::typed_url)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetExtensionSpecifics(
-    const sync_pb::ExtensionSpecifics& new_value) {
-  sync_pb::EntitySpecifics entity_specifics;
-  entity_specifics.MutableExtension(sync_pb::extension)->CopyFrom(new_value);
-  SetEntitySpecifics(entity_specifics);
-}
-
-void WriteNode::SetExternalId(int64 id) {
-  if (GetExternalId() != id)
-    entry_->Put(syncable::LOCAL_EXTERNAL_ID, id);
-}
-
-WriteNode::WriteNode(WriteTransaction* transaction)
-    : entry_(NULL), transaction_(transaction) {
-  DCHECK(transaction);
-}
-
-WriteNode::~WriteNode() {
-  delete entry_;
-}
-
-// Find an existing node matching the ID |id|, and bind this WriteNode to it.
-// Return true on success.
-bool WriteNode::InitByIdLookup(int64 id) {
-  DCHECK(!entry_) << "Init called twice";
-  DCHECK_NE(id, kInvalidId);
-  entry_ = new syncable::MutableEntry(transaction_->GetWrappedWriteTrans(),
-                                      syncable::GET_BY_HANDLE, id);
-  return (entry_->good() && !entry_->Get(syncable::IS_DEL) &&
-          DecryptIfNecessary());
-}
-
-// Find a node by client tag, and bind this WriteNode to it.
-// Return true if the write node was found, and was not deleted.
-// Undeleting a deleted node is possible by ClientTag.
-bool WriteNode::InitByClientTagLookup(syncable::ModelType model_type,
-                                      const std::string& tag) {
-  DCHECK(!entry_) << "Init called twice";
-  if (tag.empty())
-    return false;
-
-  const std::string hash = GenerateSyncableHash(model_type, tag);
-
-  entry_ = new syncable::MutableEntry(transaction_->GetWrappedWriteTrans(),
-                                      syncable::GET_BY_CLIENT_TAG, hash);
-  return (entry_->good() && !entry_->Get(syncable::IS_DEL) &&
-          DecryptIfNecessary());
-}
-
-bool WriteNode::InitByTagLookup(const std::string& tag) {
-  DCHECK(!entry_) << "Init called twice";
-  if (tag.empty())
-    return false;
-  entry_ = new syncable::MutableEntry(transaction_->GetWrappedWriteTrans(),
-                                      syncable::GET_BY_SERVER_TAG, tag);
-  if (!entry_->good())
-    return false;
-  if (entry_->Get(syncable::IS_DEL))
-    return false;
-  syncable::ModelType model_type = GetModelType();
-  DCHECK_EQ(syncable::NIGORI, model_type);
-  return true;
-}
-
-void WriteNode::PutModelType(syncable::ModelType model_type) {
-  // Set an empty specifics of the appropriate datatype.  The presence
-  // of the specific extension will identify the model type.
-  DCHECK(GetModelType() == model_type ||
-         GetModelType() == syncable::UNSPECIFIED);  // Immutable once set.
-
-  sync_pb::EntitySpecifics specifics;
-  syncable::AddDefaultExtensionValue(model_type, &specifics);
-  SetEntitySpecifics(specifics);
-}
-
-// Create a new node with default properties, and bind this WriteNode to it.
-// Return true on success.
-bool WriteNode::InitByCreation(syncable::ModelType model_type,
-                               const BaseNode& parent,
-                               const BaseNode* predecessor) {
-  DCHECK(!entry_) << "Init called twice";
-  // |predecessor| must be a child of |parent| or NULL.
-  if (predecessor && predecessor->GetParentId() != parent.GetId()) {
-    DCHECK(false);
-    return false;
-  }
-
-  syncable::Id parent_id = parent.GetEntry()->Get(syncable::ID);
-
-  // Start out with a dummy name.  We expect
-  // the caller to set a meaningful name after creation.
-  string dummy(kDefaultNameForNewNodes);
-
-  entry_ = new syncable::MutableEntry(transaction_->GetWrappedWriteTrans(),
-                                      syncable::CREATE, parent_id, dummy);
-
-  if (!entry_->good())
-    return false;
-
-  // Entries are untitled folders by default.
-  entry_->Put(syncable::IS_DIR, true);
-
-  PutModelType(model_type);
-
-  // Now set the predecessor, which sets IS_UNSYNCED as necessary.
-  PutPredecessor(predecessor);
-
-  return true;
-}
-
-// Create a new node with default properties and a client defined unique tag,
-// and bind this WriteNode to it.
-// Return true on success. If the tag exists in the database, then
-// we will attempt to undelete the node.
-// TODO(chron): Code datatype into hash tag.
-// TODO(chron): Is model type ever lost?
-bool WriteNode::InitUniqueByCreation(syncable::ModelType model_type,
-                                     const BaseNode& parent,
-                                     const std::string& tag) {
-  DCHECK(!entry_) << "Init called twice";
-
-  const std::string hash = GenerateSyncableHash(model_type, tag);
-
-  syncable::Id parent_id = parent.GetEntry()->Get(syncable::ID);
-
-  // Start out with a dummy name.  We expect
-  // the caller to set a meaningful name after creation.
-  string dummy(kDefaultNameForNewNodes);
-
-  // Check if we have this locally and need to undelete it.
-  scoped_ptr<syncable::MutableEntry> existing_entry(
-      new syncable::MutableEntry(transaction_->GetWrappedWriteTrans(),
-                                 syncable::GET_BY_CLIENT_TAG, hash));
-
-  if (existing_entry->good()) {
-    if (existing_entry->Get(syncable::IS_DEL)) {
-      // Rules for undelete:
-      // BASE_VERSION: Must keep the same.
-      // ID: Essential to keep the same.
-      // META_HANDLE: Must be the same, so we can't "split" the entry.
-      // IS_DEL: Must be set to false, will cause reindexing.
-      //         This one is weird because IS_DEL is true for "update only"
-      //         items. It should be OK to undelete an update only.
-      // MTIME/CTIME: Seems reasonable to just leave them alone.
-      // IS_UNSYNCED: Must set this to true or face database insurrection.
-      //              We do this below this block.
-      // IS_UNAPPLIED_UPDATE: Either keep it the same or also set BASE_VERSION
-      //                      to SERVER_VERSION. We keep it the same here.
-      // IS_DIR: We'll leave it the same.
-      // SPECIFICS: Reset it.
-
-      existing_entry->Put(syncable::IS_DEL, false);
-
-      // Client tags are immutable and must be paired with the ID.
-      // If a server update comes down with an ID and client tag combo,
-      // and it already exists, always overwrite it and store only one copy.
-      // We have to undelete entries because we can't disassociate IDs from
-      // tags and updates.
-
-      existing_entry->Put(syncable::NON_UNIQUE_NAME, dummy);
-      existing_entry->Put(syncable::PARENT_ID, parent_id);
-      entry_ = existing_entry.release();
-    } else {
-      return false;
-    }
-  } else {
-    entry_ = new syncable::MutableEntry(transaction_->GetWrappedWriteTrans(),
-                                        syncable::CREATE, parent_id, dummy);
-    if (!entry_->good()) {
-      return false;
-    }
-
-    // Only set IS_DIR for new entries. Don't bitflip undeleted ones.
-    entry_->Put(syncable::UNIQUE_CLIENT_TAG, hash);
-  }
-
-  // We don't support directory and tag combinations.
-  entry_->Put(syncable::IS_DIR, false);
-
-  // Will clear specifics data.
-  PutModelType(model_type);
-
-  // Now set the predecessor, which sets IS_UNSYNCED as necessary.
-  PutPredecessor(NULL);
-
-  return true;
-}
-
-bool WriteNode::SetPosition(const BaseNode& new_parent,
-                            const BaseNode* predecessor) {
-  // |predecessor| must be a child of |new_parent| or NULL.
-  if (predecessor && predecessor->GetParentId() != new_parent.GetId()) {
-    DCHECK(false);
-    return false;
-  }
-
-  syncable::Id new_parent_id = new_parent.GetEntry()->Get(syncable::ID);
-
-  // Filter out redundant changes if both the parent and the predecessor match.
-  if (new_parent_id == entry_->Get(syncable::PARENT_ID)) {
-    const syncable::Id& old = entry_->Get(syncable::PREV_ID);
-    if ((!predecessor && old.IsRoot()) ||
-        (predecessor && (old == predecessor->GetEntry()->Get(syncable::ID)))) {
-      return true;
-    }
-  }
-
-  // Atomically change the parent. This will fail if it would
-  // introduce a cycle in the hierarchy.
-  if (!entry_->Put(syncable::PARENT_ID, new_parent_id))
-    return false;
-
-  // Now set the predecessor, which sets IS_UNSYNCED as necessary.
-  PutPredecessor(predecessor);
-
-  return true;
-}
-
-const syncable::Entry* WriteNode::GetEntry() const {
-  return entry_;
-}
-
-const BaseTransaction* WriteNode::GetTransaction() const {
-  return transaction_;
-}
-
-void WriteNode::Remove() {
-  entry_->Put(syncable::IS_DEL, true);
-  MarkForSyncing();
-}
-
-void WriteNode::PutPredecessor(const BaseNode* predecessor) {
-  syncable::Id predecessor_id = predecessor ?
-      predecessor->GetEntry()->Get(syncable::ID) : syncable::Id();
-  entry_->PutPredecessor(predecessor_id);
-  // Mark this entry as unsynced, to wake up the syncer.
-  MarkForSyncing();
-}
-
-void WriteNode::SetFaviconBytes(const vector<unsigned char>& bytes) {
-  sync_pb::BookmarkSpecifics new_value = GetBookmarkSpecifics();
-  new_value.set_favicon(bytes.empty() ? NULL : &bytes[0], bytes.size());
-  SetBookmarkSpecifics(new_value);
-}
-
-void WriteNode::MarkForSyncing() {
-  syncable::MarkForSyncing(entry_);
-}
-
-//////////////////////////////////////////////////////////////////////////
-// ReadNode member definitions
-ReadNode::ReadNode(const BaseTransaction* transaction)
-    : entry_(NULL), transaction_(transaction) {
-  DCHECK(transaction);
-}
-
-ReadNode::ReadNode() {
-  entry_ = NULL;
-  transaction_ = NULL;
-}
-
-ReadNode::~ReadNode() {
-  delete entry_;
-}
-
-void ReadNode::InitByRootLookup() {
-  DCHECK(!entry_) << "Init called twice";
-  syncable::BaseTransaction* trans = transaction_->GetWrappedTrans();
-  entry_ = new syncable::Entry(trans, syncable::GET_BY_ID, trans->root_id());
-  if (!entry_->good())
-    DCHECK(false) << "Could not lookup root node for reading.";
-}
-
-bool ReadNode::InitByIdLookup(int64 id) {
-  DCHECK(!entry_) << "Init called twice";
-  DCHECK_NE(id, kInvalidId);
-  syncable::BaseTransaction* trans = transaction_->GetWrappedTrans();
-  entry_ = new syncable::Entry(trans, syncable::GET_BY_HANDLE, id);
-  if (!entry_->good())
-    return false;
-  if (entry_->Get(syncable::IS_DEL))
-    return false;
-  syncable::ModelType model_type = GetModelType();
-  LOG_IF(WARNING, model_type == syncable::UNSPECIFIED ||
-                  model_type == syncable::TOP_LEVEL_FOLDER)
-      << "SyncAPI InitByIdLookup referencing unusual object.";
-  return DecryptIfNecessary();
-}
-
-bool ReadNode::InitByClientTagLookup(syncable::ModelType model_type,
-                                     const std::string& tag) {
-  DCHECK(!entry_) << "Init called twice";
-  if (tag.empty())
-    return false;
-
-  const std::string hash = GenerateSyncableHash(model_type, tag);
-
-  entry_ = new syncable::Entry(transaction_->GetWrappedTrans(),
-                               syncable::GET_BY_CLIENT_TAG, hash);
-  return (entry_->good() && !entry_->Get(syncable::IS_DEL) &&
-          DecryptIfNecessary());
-}
-
-const syncable::Entry* ReadNode::GetEntry() const {
-  return entry_;
-}
-
-const BaseTransaction* ReadNode::GetTransaction() const {
-  return transaction_;
-}
-
-bool ReadNode::InitByTagLookup(const std::string& tag) {
-  DCHECK(!entry_) << "Init called twice";
-  if (tag.empty())
-    return false;
-  syncable::BaseTransaction* trans = transaction_->GetWrappedTrans();
-  entry_ = new syncable::Entry(trans, syncable::GET_BY_SERVER_TAG, tag);
-  if (!entry_->good())
-    return false;
-  if (entry_->Get(syncable::IS_DEL))
-    return false;
-  syncable::ModelType model_type = GetModelType();
-  LOG_IF(WARNING, model_type == syncable::UNSPECIFIED ||
-                  model_type == syncable::TOP_LEVEL_FOLDER)
-      << "SyncAPI InitByTagLookup referencing unusually typed object.";
-  return DecryptIfNecessary();
-}
-
-//////////////////////////////////////////////////////////////////////////
-// ReadTransaction member definitions
-ReadTransaction::ReadTransaction(const tracked_objects::Location& from_here,
-                                 UserShare* share)
-    : BaseTransaction(share),
-      transaction_(NULL),
-      close_transaction_(true) {
-  transaction_ = new syncable::ReadTransaction(from_here, GetLookup());
-}
-
-ReadTransaction::ReadTransaction(UserShare* share,
-                                 syncable::BaseTransaction* trans)
-    : BaseTransaction(share),
-      transaction_(trans),
-      close_transaction_(false) {}
-
-ReadTransaction::~ReadTransaction() {
-  if (close_transaction_) {
-    delete transaction_;
-  }
-}
-
-syncable::BaseTransaction* ReadTransaction::GetWrappedTrans() const {
-  return transaction_;
-}
-
-//////////////////////////////////////////////////////////////////////////
-// WriteTransaction member definitions
-WriteTransaction::WriteTransaction(const tracked_objects::Location& from_here,
-                                   UserShare* share)
-    : BaseTransaction(share),
-      transaction_(NULL) {
-  transaction_ = new syncable::WriteTransaction(from_here, syncable::SYNCAPI,
-                                                GetLookup());
-}
-
-WriteTransaction::~WriteTransaction() {
-  delete transaction_;
-}
-
-syncable::BaseTransaction* WriteTransaction::GetWrappedTrans() const {
-  return transaction_;
-}
-
-SyncManager::ChangeRecord::ChangeRecord()
-    : id(kInvalidId), action(ACTION_ADD) {}
-
-SyncManager::ChangeRecord::~ChangeRecord() {}
-
-DictionaryValue* SyncManager::ChangeRecord::ToValue(
-    const BaseTransaction* trans) const {
-  DictionaryValue* value = new DictionaryValue();
-  std::string action_str;
-  switch (action) {
-    case ACTION_ADD:
-      action_str = "Add";
-      break;
-    case ACTION_DELETE:
-      action_str = "Delete";
-      break;
-    case ACTION_UPDATE:
-      action_str = "Update";
-      break;
-    default:
-      NOTREACHED();
-      action_str = "Unknown";
-      break;
-  }
-  value->SetString("action", action_str);
-  Value* node_value = NULL;
-  if (action == ACTION_DELETE) {
-    DictionaryValue* node_dict = new DictionaryValue();
-    node_dict->SetString("id", base::Int64ToString(id));
-    node_dict->Set("specifics",
-                    browser_sync::EntitySpecificsToValue(specifics));
-    if (extra.get()) {
-      node_dict->Set("extra", extra->ToValue());
-    }
-    node_value = node_dict;
-  } else {
-    ReadNode node(trans);
-    if (node.InitByIdLookup(id)) {
-      node_value = node.GetDetailsAsValue();
-    }
-  }
-  if (!node_value) {
-    NOTREACHED();
-    node_value = Value::CreateNullValue();
-  }
-  value->Set("node", node_value);
-  return value;
-}
-
-SyncManager::ExtraPasswordChangeRecordData::ExtraPasswordChangeRecordData() {}
-
-SyncManager::ExtraPasswordChangeRecordData::ExtraPasswordChangeRecordData(
-    const sync_pb::PasswordSpecificsData& data)
-    : unencrypted_(data) {
-}
-
-SyncManager::ExtraPasswordChangeRecordData::~ExtraPasswordChangeRecordData() {}
-
-DictionaryValue* SyncManager::ExtraPasswordChangeRecordData::ToValue() const {
-  return browser_sync::PasswordSpecificsDataToValue(unencrypted_);
-}
-
-const sync_pb::PasswordSpecificsData&
-    SyncManager::ExtraPasswordChangeRecordData::unencrypted() const {
-  return unencrypted_;
-}
-
-syncable::ModelTypeSet GetEncryptedTypes(
-    const sync_api::BaseTransaction* trans) {
-  Cryptographer* cryptographer = trans->GetCryptographer();
-  return cryptographer->GetEncryptedTypes();
-}
-
-//////////////////////////////////////////////////////////////////////////
-// SyncManager's implementation: SyncManager::SyncInternal
-class SyncManager::SyncInternal
-    : public net::NetworkChangeNotifier::IPAddressObserver,
-      public sync_notifier::SyncNotifierObserver,
-      public JsBackend,
-      public SyncEngineEventListener,
-      public ServerConnectionEventListener,
-      public syncable::DirectoryChangeDelegate {
-  static const int kDefaultNudgeDelayMilliseconds;
-  static const int kPreferencesNudgeDelayMilliseconds;
- public:
-  explicit SyncInternal(const std::string& name)
-      : weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
-        registrar_(NULL),
-        initialized_(false),
-        setup_for_test_mode_(false),
-        observing_ip_address_changes_(false) {
-    // Pre-fill |notification_info_map_|.
-    for (int i = syncable::FIRST_REAL_MODEL_TYPE;
-         i < syncable::MODEL_TYPE_COUNT; ++i) {
-      notification_info_map_.insert(
-          std::make_pair(syncable::ModelTypeFromInt(i), NotificationInfo()));
-    }
-
-    // Bind message handlers.
-    BindJsMessageHandler(
-        "getNotificationState",
-        &SyncManager::SyncInternal::GetNotificationState);
-    BindJsMessageHandler(
-        "getNotificationInfo",
-        &SyncManager::SyncInternal::GetNotificationInfo);
-    BindJsMessageHandler(
-        "getRootNodeDetails",
-        &SyncManager::SyncInternal::GetRootNodeDetails);
-    BindJsMessageHandler(
-        "getNodeSummariesById",
-        &SyncManager::SyncInternal::GetNodeSummariesById);
-    BindJsMessageHandler(
-        "getNodeDetailsById",
-        &SyncManager::SyncInternal::GetNodeDetailsById);
-    BindJsMessageHandler(
-        "getChildNodeIds",
-        &SyncManager::SyncInternal::GetChildNodeIds);
-    BindJsMessageHandler(
-        "findNodesContainingString",
-        &SyncManager::SyncInternal::FindNodesContainingString);
-  }
-
-  virtual ~SyncInternal() {
-    CHECK(!initialized_);
-  }
-
-  bool Init(const FilePath& database_location,
-            const WeakHandle<JsEventHandler>& event_handler,
-            const std::string& sync_server_and_path,
-            int port,
-            bool use_ssl,
-            HttpPostProviderFactory* post_factory,
-            ModelSafeWorkerRegistrar* model_safe_worker_registrar,
-            const std::string& user_agent,
-            const SyncCredentials& credentials,
-            sync_notifier::SyncNotifier* sync_notifier,
-            const std::string& restored_key_for_bootstrapping,
-            bool setup_for_test_mode);
-
-  // Sign into sync with given credentials.
-  // We do not verify the tokens given. After this call, the tokens are set
-  // and the sync DB is open. True if successful, false if something
-  // went wrong.
-  bool SignIn(const SyncCredentials& credentials);
-
-  // Update tokens that we're using in Sync. Email must stay the same.
-  void UpdateCredentials(const SyncCredentials& credentials);
-
-  // Called when the user disables or enables a sync type.
-  void UpdateEnabledTypes();
-
-  // Tell the sync engine to start the syncing process.
-  void StartSyncingNormally();
-
-  // Whether or not the Nigori node is encrypted using an explicit passphrase.
-  bool IsUsingExplicitPassphrase();
-
-  // Update the Cryptographer from the current nigori node.
-  // Note: opens a transaction and can trigger an ON_PASSPHRASE_REQUIRED, so
-  // should only be called after syncapi is fully initialized.
-  // Returns true if cryptographer is ready, false otherwise.
-  bool UpdateCryptographerFromNigori();
-
-  // Set the datatypes we want to encrypt and encrypt any nodes as necessary.
-  // Note: |encrypted_types| will be unioned with the current set of encrypted
-  // types, as we do not currently support decrypting datatypes.
-  void EncryptDataTypes(const syncable::ModelTypeSet& encrypted_types);
-
-  // Try to set the current passphrase to |passphrase|, and record whether
-  // it is an explicit passphrase or implicitly using gaia in the Nigori
-  // node.
-  void SetPassphrase(const std::string& passphrase, bool is_explicit);
-
-  // Call periodically from a database-safe thread to persist recent changes
-  // to the syncapi model.
-  void SaveChanges();
-
-  // DirectoryChangeDelegate implementation.
-  // This listener is called upon completion of a syncable transaction, and
-  // builds the list of sync-engine initiated changes that will be forwarded to
-  // the SyncManager's Observers.
-  virtual void HandleTransactionCompleteChangeEvent(
-      const ModelTypeBitSet& models_with_changes);
-  virtual ModelTypeBitSet HandleTransactionEndingChangeEvent(
-      syncable::BaseTransaction* trans);
-  virtual void HandleCalculateChangesChangeEventFromSyncApi(
-      const EntryKernelMutationSet& mutations,
-      syncable::BaseTransaction* trans);
-  virtual void HandleCalculateChangesChangeEventFromSyncer(
-      const EntryKernelMutationSet& mutations,
-      syncable::BaseTransaction* trans);
-
-  // Listens for notifications from the ServerConnectionManager
-  void HandleServerConnectionEvent(const ServerConnectionEvent& event);
-
-  // Open the directory named with username_for_share
-  bool OpenDirectory();
-
-  // SyncNotifierObserver implementation.
-  virtual void OnNotificationStateChange(
-      bool notifications_enabled);
-
-  virtual void OnIncomingNotification(
-      const syncable::ModelTypePayloadMap& type_payloads);
-
-  virtual void StoreState(const std::string& cookie);
-
-  // Thread-safe observers_ accessors.
-  void CopyObservers(ObserverList<SyncManager::Observer>* observers_copy);
-  bool HaveObservers() const;
-  void AddObserver(SyncManager::Observer* observer);
-  void RemoveObserver(SyncManager::Observer* observer);
-
-  // Accessors for the private members.
-  DirectoryManager* dir_manager() { return share_.dir_manager.get(); }
-  SyncAPIServerConnectionManager* connection_manager() {
-    return connection_manager_.get();
-  }
-  SyncScheduler* scheduler() { return scheduler_.get(); }
-  UserShare* GetUserShare() {
-    DCHECK(initialized_);
-    return &share_;
-  }
-
-  // Return the currently active (validated) username for use with syncable
-  // types.
-  const std::string& username_for_share() const {
-    return share_.name;
-  }
-
-  Status GetStatus();
-
-  void RequestNudge(const tracked_objects::Location& nudge_location);
-
-  void RequestNudgeForDataType(
-      const tracked_objects::Location& nudge_location,
-      const ModelType& type);
-
-  void RequestEarlyExit();
-
-  // See SyncManager::Shutdown for information.
-  void Shutdown();
-
-  // If this is a deletion for a password, sets the legacy
-  // ExtraPasswordChangeRecordData field of |buffer|. Otherwise sets
-  // |buffer|'s specifics field to contain the unencrypted data.
-  void SetExtraChangeRecordData(int64 id,
-                                syncable::ModelType type,
-                                ChangeReorderBuffer* buffer,
-                                Cryptographer* cryptographer,
-                                const syncable::EntryKernel& original,
-                                bool existed_before,
-                                bool exists_now);
-
-  // Called only by our NetworkChangeNotifier.
-  virtual void OnIPAddressChanged();
-
-  bool InitialSyncEndedForAllEnabledTypes() {
-    syncable::ModelTypeSet types;
-    ModelSafeRoutingInfo enabled_types;
-    registrar_->GetModelSafeRoutingInfo(&enabled_types);
-    for (ModelSafeRoutingInfo::const_iterator i = enabled_types.begin();
-        i != enabled_types.end(); ++i) {
-      types.insert(i->first);
-    }
-
-    return InitialSyncEndedForTypes(types, &share_);
-  }
-
-  // SyncEngineEventListener implementation.
-  virtual void OnSyncEngineEvent(const SyncEngineEvent& event);
-
-  // ServerConnectionEventListener implementation.
-  virtual void OnServerConnectionEvent(const ServerConnectionEvent& event);
-
-  // JsBackend implementation.
-  virtual void SetJsEventHandler(
-      const WeakHandle<JsEventHandler>& event_handler) OVERRIDE;
-  virtual void ProcessJsMessage(
-      const std::string& name, const JsArgList& args,
-      const WeakHandle<JsReplyHandler>& reply_handler) OVERRIDE;
-
- private:
-  struct NotificationInfo {
-    int total_count;
-    std::string payload;
-
-    NotificationInfo() : total_count(0) {}
-
-    ~NotificationInfo() {}
-
-    // Returned pointer owned by the caller.
-    DictionaryValue* ToValue() const {
-      DictionaryValue* value = new DictionaryValue();
-      value->SetInteger("totalCount", total_count);
-      value->SetString("payload", payload);
-      return value;
-    }
-  };
-
-  typedef std::map<syncable::ModelType, NotificationInfo> NotificationInfoMap;
-  typedef JsArgList
-      (SyncManager::SyncInternal::*UnboundJsMessageHandler)(const JsArgList&);
-  typedef base::Callback<JsArgList(JsArgList)> JsMessageHandler;
-  typedef std::map<std::string, JsMessageHandler> JsMessageHandlerMap;
-
-  // Helper to call OnAuthError when no authentication credentials are
-  // available.
-  void RaiseAuthNeededEvent();
-
-  // Determine if the parents or predecessors differ between the old and new
-  // versions of an entry stored in |a| and |b|.  Note that a node's index may
-  // change without its NEXT_ID changing if the node at NEXT_ID also moved (but
-  // the relative order is unchanged).  To handle such cases, we rely on the
-  // caller to treat a position update on any sibling as updating the positions
-  // of all siblings.
-  static bool VisiblePositionsDiffer(
-      const syncable::EntryKernelMutation& mutation) {
-    const syncable::EntryKernel& a = mutation.original;
-    const syncable::EntryKernel& b = mutation.mutated;
-    // If the datatype isn't one where the browser model cares about position,
-    // don't bother notifying that data model of position-only changes.
-    if (!ShouldMaintainPosition(
-            syncable::GetModelTypeFromSpecifics(b.ref(SPECIFICS))))
-      return false;
-    if (a.ref(syncable::NEXT_ID) != b.ref(syncable::NEXT_ID))
-      return true;
-    if (a.ref(syncable::PARENT_ID) != b.ref(syncable::PARENT_ID))
-      return true;
-    return false;
-  }
-
-  // Determine if any of the fields made visible to clients of the Sync API
-  // differ between the versions of an entry stored in |a| and |b|. A return
-  // value of false means that it should be OK to ignore this change.
-  static bool VisiblePropertiesDiffer(
-      const syncable::EntryKernelMutation& mutation,
-      Cryptographer* cryptographer) {
-    const syncable::EntryKernel& a = mutation.original;
-    const syncable::EntryKernel& b = mutation.mutated;
-    const sync_pb::EntitySpecifics& a_specifics = a.ref(SPECIFICS);
-    const sync_pb::EntitySpecifics& b_specifics = b.ref(SPECIFICS);
-    DCHECK_EQ(syncable::GetModelTypeFromSpecifics(a_specifics),
-              syncable::GetModelTypeFromSpecifics(b_specifics));
-    syncable::ModelType model_type =
-        syncable::GetModelTypeFromSpecifics(b_specifics);
-    // Suppress updates to items that aren't tracked by any browser model.
-    if (model_type < syncable::FIRST_REAL_MODEL_TYPE ||
-        !a.ref(syncable::UNIQUE_SERVER_TAG).empty()) {
-      return false;
-    }
-    if (a.ref(syncable::IS_DIR) != b.ref(syncable::IS_DIR))
-      return true;
-    if (!AreSpecificsEqual(cryptographer,
-                           a.ref(syncable::SPECIFICS),
-                           b.ref(syncable::SPECIFICS))) {
-      return true;
-    }
-    // We only care if the name has changed if neither specifics is encrypted
-    // (encrypted nodes blow away the NON_UNIQUE_NAME).
-    if (!a_specifics.has_encrypted() && !b_specifics.has_encrypted() &&
-        a.ref(syncable::NON_UNIQUE_NAME) != b.ref(syncable::NON_UNIQUE_NAME))
-      return true;
-    if (VisiblePositionsDiffer(mutation))
-      return true;
-    return false;
-  }
-
-  bool ChangeBuffersAreEmpty() {
-    for (int i = 0; i < syncable::MODEL_TYPE_COUNT; ++i) {
-      if (!change_buffers_[i].IsEmpty())
-        return false;
-    }
-    return true;
-  }
-
-  void CheckServerReachable() {
-    if (connection_manager()) {
-      connection_manager()->CheckServerReachable();
-    } else {
-      NOTREACHED() << "Should be valid connection manager!";
-    }
-  }
-
-  void ReEncryptEverything(WriteTransaction* trans);
-
-  // Initializes (bootstraps) the Cryptographer if NIGORI has finished
-  // initial sync so that it can immediately start encrypting / decrypting.
-  // If the restored key is incompatible with the current version of the NIGORI
-  // node (which could happen if a restart occurred just after an update to
-  // NIGORI was downloaded and the user must enter a new passphrase to decrypt)
-  // then we will raise OnPassphraseRequired and set pending keys for
-  // decryption.  Otherwise, the cryptographer is made ready (is_ready()).
-  void BootstrapEncryption(const std::string& restored_key_for_bootstrapping);
-
-  // Called for every notification. This updates the notification statistics
-  // to be displayed in about:sync.
-  void UpdateNotificationInfo(
-      const syncable::ModelTypePayloadMap& type_payloads);
-
-  // Checks for server reachabilty and requests a nudge.
-  void OnIPAddressChangedImpl();
-
-  // Helper function used only by the constructor.
-  void BindJsMessageHandler(
-    const std::string& name, UnboundJsMessageHandler unbound_message_handler);
-
-  // Returned pointer is owned by the caller.
-  static DictionaryValue* NotificationInfoToValue(
-      const NotificationInfoMap& notification_info);
-
-  // JS message handlers.
-  JsArgList GetNotificationState(const JsArgList& args);
-  JsArgList GetNotificationInfo(const JsArgList& args);
-  JsArgList GetRootNodeDetails(const JsArgList& args);
-  JsArgList GetNodeSummariesById(const JsArgList& args);
-  JsArgList GetNodeDetailsById(const JsArgList& args);
-  JsArgList GetChildNodeIds(const JsArgList& args);
-  JsArgList FindNodesContainingString(const JsArgList& args);
-
-  const std::string name_;
-
-  base::ThreadChecker thread_checker_;
-
-  base::WeakPtrFactory<SyncInternal> weak_ptr_factory_;
-
-  // Thread-safe handle used by
-  // HandleCalculateChangesChangeEventFromSyncApi(), which can be
-  // called from any thread.  Valid only between between calls to
-  // Init() and Shutdown().
-  //
-  // TODO(akalin): Ideally, we wouldn't need to store this; instead,
-  // we'd have another worker class which implements
-  // HandleCalculateChangesChangeEventFromSyncApi() and we'd pass it a
-  // WeakHandle when we construct it.
-  WeakHandle<SyncInternal> weak_handle_this_;
-
-  // We couple the DirectoryManager and username together in a UserShare member
-  // so we can return a handle to share_ to clients of the API for use when
-  // constructing any transaction type.
-  UserShare share_;
-
-  // We have to lock around every observers_ access because it can get accessed
-  // from any thread and added to/removed from on the core thread.
-  mutable base::Lock observers_lock_;
-  ObserverList<SyncManager::Observer> observers_;
-
-  // The ServerConnectionManager used to abstract communication between the
-  // client (the Syncer) and the sync server.
-  scoped_ptr<SyncAPIServerConnectionManager> connection_manager_;
-
-  // The scheduler that runs the Syncer. Needs to be explicitly
-  // Start()ed.
-  scoped_ptr<SyncScheduler> scheduler_;
-
-  // The SyncNotifier which notifies us when updates need to be downloaded.
-  scoped_ptr<sync_notifier::SyncNotifier> sync_notifier_;
-
-  // A multi-purpose status watch object that aggregates stats from various
-  // sync components.
-  AllStatus allstatus_;
-
-  // Each element of this array is a store of change records produced by
-  // HandleChangeEvent during the CALCULATE_CHANGES step.  The changes are
-  // segregated by model type, and are stored here to be processed and
-  // forwarded to the observer slightly later, at the TRANSACTION_ENDING
-  // step by HandleTransactionEndingChangeEvent. The list is cleared in the
-  // TRANSACTION_COMPLETE step by HandleTransactionCompleteChangeEvent.
-  ChangeReorderBuffer change_buffers_[syncable::MODEL_TYPE_COUNT];
-
-  // The entity that provides us with information about which types to sync.
-  // The instance is shared between the SyncManager and the Syncer.
-  ModelSafeWorkerRegistrar* registrar_;
-
-  // Set to true once Init has been called.
-  bool initialized_;
-
-  // True if the SyncManager should be running in test mode (no sync
-  // scheduler actually communicating with the server).
-  bool setup_for_test_mode_;
-
-  // Whether we should respond to an IP address change notification.
-  bool observing_ip_address_changes_;
-
-  // Map used to store the notification info to be displayed in
-  // about:sync page.
-  NotificationInfoMap notification_info_map_;
-
-  // These are for interacting with chrome://sync-internals.
-  JsMessageHandlerMap js_message_handlers_;
-  WeakHandle<JsEventHandler> js_event_handler_;
-  JsSyncManagerObserver js_sync_manager_observer_;
-  JsTransactionObserver js_transaction_observer_;
-};
-const int SyncManager::SyncInternal::kDefaultNudgeDelayMilliseconds = 200;
-const int SyncManager::SyncInternal::kPreferencesNudgeDelayMilliseconds = 2000;
-
-SyncManager::Observer::~Observer() {}
-
-SyncManager::SyncManager(const std::string& name)
-    : data_(new SyncInternal(name)) {}
-
-SyncManager::Status::Status()
-    : summary(INVALID),
-      authenticated(false),
-      server_up(false),
-      server_reachable(false),
-      server_broken(false),
-      notifications_enabled(false),
-      notifications_received(0),
-      notifiable_commits(0),
-      max_consecutive_errors(0),
-      unsynced_count(0),
-      conflicting_count(0),
-      syncing(false),
-      initial_sync_ended(false),
-      syncer_stuck(false),
-      updates_available(0),
-      updates_received(0),
-      tombstone_updates_received(0),
-      disk_full(false),
-      num_local_overwrites_total(0),
-      num_server_overwrites_total(0),
-      nonempty_get_updates(0),
-      empty_get_updates(0),
-      useless_sync_cycles(0),
-      useful_sync_cycles(0),
-      cryptographer_ready(false),
-      crypto_has_pending_keys(false) {
-}
-
-SyncManager::Status::~Status() {
-}
-
-bool SyncManager::Init(
-    const FilePath& database_location,
-    const WeakHandle<JsEventHandler>& event_handler,
-    const std::string& sync_server_and_path,
-    int sync_server_port,
-    bool use_ssl,
-    HttpPostProviderFactory* post_factory,
-    ModelSafeWorkerRegistrar* registrar,
-    const std::string& user_agent,
-    const SyncCredentials& credentials,
-    sync_notifier::SyncNotifier* sync_notifier,
-    const std::string& restored_key_for_bootstrapping,
-    bool setup_for_test_mode) {
-  DCHECK(post_factory);
-  VLOG(1) << "SyncManager starting Init...";
-  string server_string(sync_server_and_path);
-  return data_->Init(database_location,
-                     event_handler,
-                     server_string,
-                     sync_server_port,
-                     use_ssl,
-                     post_factory,
-                     registrar,
-                     user_agent,
-                     credentials,
-                     sync_notifier,
-                     restored_key_for_bootstrapping,
-                     setup_for_test_mode);
-}
-
-void SyncManager::UpdateCredentials(const SyncCredentials& credentials) {
-  data_->UpdateCredentials(credentials);
-}
-
-void SyncManager::UpdateEnabledTypes() {
-  data_->UpdateEnabledTypes();
-}
-
-
-bool SyncManager::InitialSyncEndedForAllEnabledTypes() {
-  return data_->InitialSyncEndedForAllEnabledTypes();
-}
-
-void SyncManager::StartSyncingNormally() {
-  data_->StartSyncingNormally();
-}
-
-void SyncManager::SetPassphrase(const std::string& passphrase,
-     bool is_explicit) {
-  data_->SetPassphrase(passphrase, is_explicit);
-}
-
-void SyncManager::EncryptDataTypes(
-    const syncable::ModelTypeSet& encrypted_types) {
-  data_->EncryptDataTypes(encrypted_types);
-}
-
-bool SyncManager::IsUsingExplicitPassphrase() {
-  return data_ && data_->IsUsingExplicitPassphrase();
-}
-
-void SyncManager::RequestCleanupDisabledTypes() {
-  if (data_->scheduler())
-    data_->scheduler()->ScheduleCleanupDisabledTypes();
-}
-
-void SyncManager::RequestClearServerData() {
-  if (data_->scheduler())
-    data_->scheduler()->ScheduleClearUserData();
-}
-
-void SyncManager::RequestConfig(const syncable::ModelTypeBitSet& types,
-    ConfigureReason reason) {
-  if (!data_->scheduler()) {
-    LOG(INFO)
-        << "SyncManager::RequestConfig: bailing out because scheduler is "
-        << "null";
-    return;
-  }
-  StartConfigurationMode(NULL);
-  data_->scheduler()->ScheduleConfig(types, reason);
-}
-
-void SyncManager::StartConfigurationMode(ModeChangeCallback* callback) {
-  if (!data_->scheduler()) {
-    LOG(INFO)
-        << "SyncManager::StartConfigurationMode: could not start "
-        << "configuration mode because because scheduler is null";
-    return;
-  }
-  data_->scheduler()->Start(
-      browser_sync::SyncScheduler::CONFIGURATION_MODE, callback);
-}
-
-const std::string& SyncManager::GetAuthenticatedUsername() {
-  DCHECK(data_);
-  return data_->username_for_share();
-}
-
-bool SyncManager::SyncInternal::Init(
-    const FilePath& database_location,
-    const WeakHandle<JsEventHandler>& event_handler,
-    const std::string& sync_server_and_path,
-    int port,
-    bool use_ssl,
-    HttpPostProviderFactory* post_factory,
-    ModelSafeWorkerRegistrar* model_safe_worker_registrar,
-    const std::string& user_agent,
-    const SyncCredentials& credentials,
-    sync_notifier::SyncNotifier* sync_notifier,
-    const std::string& restored_key_for_bootstrapping,
-    bool setup_for_test_mode) {
-  CHECK(!initialized_);
-
-  DCHECK(thread_checker_.CalledOnValidThread());
-
-  VLOG(1) << "Starting SyncInternal initialization.";
-
-  weak_handle_this_ = MakeWeakHandle(weak_ptr_factory_.GetWeakPtr());
-
-  registrar_ = model_safe_worker_registrar;
-  setup_for_test_mode_ = setup_for_test_mode;
-
-  sync_notifier_.reset(sync_notifier);
-
-  AddObserver(&js_sync_manager_observer_);
-  SetJsEventHandler(event_handler);
-
-  share_.dir_manager.reset(new DirectoryManager(database_location));
-
-  connection_manager_.reset(new SyncAPIServerConnectionManager(
-      sync_server_and_path, port, use_ssl, user_agent, post_factory));
-
-  net::NetworkChangeNotifier::AddIPAddressObserver(this);
-  observing_ip_address_changes_ = true;
-
-  connection_manager()->AddListener(this);
-
-  // TODO(akalin): CheckServerReachable() can block, which may cause jank if we
-  // try to shut down sync.  Fix this.
-  MessageLoop::current()->PostTask(
-      FROM_HERE, base::Bind(&SyncInternal::CheckServerReachable,
-                            weak_ptr_factory_.GetWeakPtr()));
-
-  // Test mode does not use a syncer context or syncer thread.
-  if (!setup_for_test_mode_) {
-    // Build a SyncSessionContext and store the worker in it.
-    VLOG(1) << "Sync is bringing up SyncSessionContext.";
-    std::vector<SyncEngineEventListener*> listeners;
-    listeners.push_back(&allstatus_);
-    listeners.push_back(this);
-    SyncSessionContext* context = new SyncSessionContext(
-        connection_manager_.get(),
-        dir_manager(),
-        model_safe_worker_registrar,
-        listeners);
-    context->set_account_name(credentials.email);
-    // The SyncScheduler takes ownership of |context|.
-    scheduler_.reset(new SyncScheduler(name_, context, new Syncer()));
-  }
-
-  bool signed_in = SignIn(credentials);
-
-  if (signed_in && scheduler()) {
-    scheduler()->Start(
-        browser_sync::SyncScheduler::CONFIGURATION_MODE, NULL);
-  }
-
-  initialized_ = true;
-
-  // Notify that initialization is complete.
-  ObserverList<SyncManager::Observer> temp_obs_list;
-  CopyObservers(&temp_obs_list);
-  FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                    OnInitializationComplete(
-                        WeakHandle<JsBackend>(weak_ptr_factory_.GetWeakPtr())));
-
-  // The following calls check that initialized_ is true.
-
-  BootstrapEncryption(restored_key_for_bootstrapping);
-
-  sync_notifier_->AddObserver(this);
-
-  return signed_in;
-}
-
-void SyncManager::SyncInternal::BootstrapEncryption(
-    const std::string& restored_key_for_bootstrapping) {
-  // Cryptographer should only be accessed while holding a transaction.
-  ReadTransaction trans(FROM_HERE, GetUserShare());
-  Cryptographer* cryptographer = trans.GetCryptographer();
-
-  // Set the bootstrap token before bailing out if nigori node is not there.
-  // This could happen if server asked us to migrate nigri.
-  cryptographer->Bootstrap(restored_key_for_bootstrapping);
-}
-
-bool SyncManager::SyncInternal::UpdateCryptographerFromNigori() {
-  DCHECK(initialized_);
-  syncable::ScopedDirLookup lookup(dir_manager(), username_for_share());
-  if (!lookup.good()) {
-    NOTREACHED() << "BootstrapEncryption: lookup not good so bailing out";
-    return false;
-  }
-  if (!lookup->initial_sync_ended_for_type(syncable::NIGORI))
-    return false;  // Should only happen during first time sync.
-
-  ReadTransaction trans(FROM_HERE, GetUserShare());
-  Cryptographer* cryptographer = trans.GetCryptographer();
-
-  ReadNode node(&trans);
-  if (!node.InitByTagLookup(kNigoriTag)) {
-    NOTREACHED();
-    return false;
-  }
-  Cryptographer::UpdateResult result =
-      cryptographer->Update(node.GetNigoriSpecifics());
-  if (result == Cryptographer::NEEDS_PASSPHRASE) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnPassphraseRequired(sync_api::REASON_DECRYPTION));
-  }
-
-  allstatus_.SetCryptographerReady(cryptographer->is_ready());
-  allstatus_.SetCryptoHasPendingKeys(cryptographer->has_pending_keys());
-
-  return cryptographer->is_ready();
-}
-
-void SyncManager::SyncInternal::StartSyncingNormally() {
-  // Start the sync scheduler. This won't actually result in any
-  // syncing until at least the DirectoryManager broadcasts the OPENED
-  // event, and a valid server connection is detected.
-  if (scheduler())  // NULL during certain unittests.
-    scheduler()->Start(SyncScheduler::NORMAL_MODE, NULL);
-}
-
-bool SyncManager::SyncInternal::OpenDirectory() {
-  DCHECK(!initialized_) << "Should only happen once";
-
-  bool share_opened = dir_manager()->Open(username_for_share(), this);
-  DCHECK(share_opened);
-  if (!share_opened) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnStopSyncingPermanently());
-
-    LOG(ERROR) << "Could not open share for:" << username_for_share();
-    return false;
-  }
-
-  // Database has to be initialized for the guid to be available.
-  syncable::ScopedDirLookup lookup(dir_manager(), username_for_share());
-  if (!lookup.good()) {
-    NOTREACHED();
-    return false;
-  }
-
-  connection_manager()->set_client_id(lookup->cache_guid());
-  lookup->AddTransactionObserver(&js_transaction_observer_);
-  return true;
-}
-
-bool SyncManager::SyncInternal::SignIn(const SyncCredentials& credentials) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK(share_.name.empty());
-  share_.name = credentials.email;
-
-  VLOG(1) << "Signing in user: " << username_for_share();
-  if (!OpenDirectory())
-    return false;
-
-  // Retrieve and set the sync notifier state. This should be done
-  // only after OpenDirectory is called.
-  syncable::ScopedDirLookup lookup(dir_manager(), username_for_share());
-  std::string unique_id;
-  std::string state;
-  if (lookup.good()) {
-    unique_id = lookup->cache_guid();
-    state = lookup->GetNotificationState();
-    VLOG(1) << "Read notification unique ID: " << unique_id;
-    if (VLOG_IS_ON(1)) {
-      std::string encoded_state;
-      base::Base64Encode(state, &encoded_state);
-      VLOG(1) << "Read notification state: " << encoded_state;
-    }
-  } else {
-    LOG(ERROR) << "Could not read notification unique ID/state";
-  }
-  sync_notifier_->SetUniqueId(unique_id);
-  sync_notifier_->SetState(state);
-
-  UpdateCredentials(credentials);
-  UpdateEnabledTypes();
-  return true;
-}
-
-void SyncManager::SyncInternal::UpdateCredentials(
-    const SyncCredentials& credentials) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK_EQ(credentials.email, share_.name);
-  DCHECK(!credentials.email.empty());
-  DCHECK(!credentials.sync_token.empty());
-
-  observing_ip_address_changes_ = true;
-  if (connection_manager()->set_auth_token(credentials.sync_token)) {
-    sync_notifier_->UpdateCredentials(
-        credentials.email, credentials.sync_token);
-    if (!setup_for_test_mode_) {
-      CheckServerReachable();
-    }
-  }
-}
-
-void SyncManager::SyncInternal::UpdateEnabledTypes() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  ModelSafeRoutingInfo routes;
-  registrar_->GetModelSafeRoutingInfo(&routes);
-  syncable::ModelTypeSet enabled_types;
-  for (ModelSafeRoutingInfo::const_iterator it = routes.begin();
-       it != routes.end(); ++it) {
-    enabled_types.insert(it->first);
-  }
-  sync_notifier_->UpdateEnabledTypes(enabled_types);
-}
-
-void SyncManager::SyncInternal::RaiseAuthNeededEvent() {
-  ObserverList<SyncManager::Observer> temp_obs_list;
-  CopyObservers(&temp_obs_list);
-  FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-      OnAuthError(AuthError(AuthError::INVALID_GAIA_CREDENTIALS)));
-}
-
-void SyncManager::SyncInternal::SetPassphrase(
-    const std::string& passphrase, bool is_explicit) {
-  // We do not accept empty passphrases.
-  if (passphrase.empty()) {
-    VLOG(1) << "Rejecting empty passphrase.";
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-        OnPassphraseRequired(sync_api::REASON_SET_PASSPHRASE_FAILED));
-    return;
-  }
-
-  // All accesses to the cryptographer are protected by a transaction.
-  WriteTransaction trans(FROM_HERE, GetUserShare());
-  Cryptographer* cryptographer = trans.GetCryptographer();
-  KeyParams params = {"localhost", "dummy", passphrase};
-
-  WriteNode node(&trans);
-  if (!node.InitByTagLookup(kNigoriTag)) {
-    // TODO(albertb): Plumb an UnrecoverableError all the way back to the PSS.
-    NOTREACHED();
-    return;
-  }
-
-  if (cryptographer->has_pending_keys()) {
-    bool suceeded = false;
-
-    // See if the explicit flag matches what is set in nigori. If not we dont
-    // even try the passphrase. Note: This could mean that we wont try setting
-    // the gaia password as passphrase if custom is elected by the user. Which
-    // is fine because nigori node has all the old passwords in it.
-    if (node.GetNigoriSpecifics().using_explicit_passphrase() == is_explicit) {
-      if (cryptographer->DecryptPendingKeys(params)) {
-        suceeded = true;
-      } else {
-        VLOG(1) << "Passphrase failed to decrypt pending keys.";
-      }
-    } else {
-      VLOG(1) << "Not trying the passphrase because the explicit flags dont "
-              << "match. Nigori node's explicit flag is "
-              << node.GetNigoriSpecifics().using_explicit_passphrase();
-    }
-
-    if (!suceeded) {
-      ObserverList<SyncManager::Observer> temp_obs_list;
-      CopyObservers(&temp_obs_list);
-      FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-          OnPassphraseRequired(sync_api::REASON_SET_PASSPHRASE_FAILED));
-      return;
-    }
-
-    // Nudge the syncer so that encrypted datatype updates that were waiting for
-    // this passphrase get applied as soon as possible.
-    RequestNudge(FROM_HERE);
-  } else {
-    VLOG(1) << "No pending keys, adding provided passphrase.";
-
-    // Prevent an implicit SetPassphrase request from changing an explicitly
-    // set passphrase.
-    if (!is_explicit && node.GetNigoriSpecifics().using_explicit_passphrase())
-      return;
-
-    cryptographer->AddKey(params);
-
-    // TODO(tim): Bug 58231. It would be nice if SetPassphrase didn't require
-    // messing with the Nigori node, because we can't call SetPassphrase until
-    // download conditions are met vs Cryptographer init.  It seems like it's
-    // safe to defer this work.
-    sync_pb::NigoriSpecifics specifics(node.GetNigoriSpecifics());
-    specifics.clear_encrypted();
-    cryptographer->GetKeys(specifics.mutable_encrypted());
-    specifics.set_using_explicit_passphrase(is_explicit);
-    node.SetNigoriSpecifics(specifics);
-    ReEncryptEverything(&trans);
-  }
-
-  VLOG(1) << "Passphrase accepted, bootstrapping encryption.";
-  std::string bootstrap_token;
-  cryptographer->GetBootstrapToken(&bootstrap_token);
-  ObserverList<SyncManager::Observer> temp_obs_list;
-  CopyObservers(&temp_obs_list);
-  FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                    OnPassphraseAccepted(bootstrap_token));
-}
-
-bool SyncManager::SyncInternal::IsUsingExplicitPassphrase() {
-  ReadTransaction trans(FROM_HERE, &share_);
-  ReadNode node(&trans);
-  if (!node.InitByTagLookup(kNigoriTag)) {
-    // TODO(albertb): Plumb an UnrecoverableError all the way back to the PSS.
-    NOTREACHED();
-    return false;
-  }
-
-  return node.GetNigoriSpecifics().using_explicit_passphrase();
-}
-
-void SyncManager::SyncInternal::EncryptDataTypes(
-    const syncable::ModelTypeSet& encrypted_types) {
-  DCHECK(initialized_);
-  VLOG(1) << "Attempting to encrypt datatypes "
-          << syncable::ModelTypeSetToString(encrypted_types);
-
-  WriteTransaction trans(FROM_HERE, GetUserShare());
-  WriteNode node(&trans);
-  if (!node.InitByTagLookup(kNigoriTag)) {
-    NOTREACHED() << "Unable to set encrypted datatypes because Nigori node not "
-                 << "found.";
-    return;
-  }
-
-  Cryptographer* cryptographer = trans.GetCryptographer();
-
-  if (!cryptographer->is_initialized()) {
-    VLOG(1) << "Attempting to encrypt datatypes when cryptographer not "
-            << "initialized, prompting for passphrase.";
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    // TODO(zea): this isn't really decryption, but that's the only way we have
-    // to prompt the user for a passsphrase. See http://crbug.com/91379.
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnPassphraseRequired(sync_api::REASON_DECRYPTION));
-    return;
-  }
-
-  // Update the Nigori node's set of encrypted datatypes.
-  // Note, we merge the current encrypted types with those requested. Once a
-  // datatypes is marked as needing encryption, it is never unmarked.
-  sync_pb::NigoriSpecifics nigori;
-  nigori.CopyFrom(node.GetNigoriSpecifics());
-  syncable::ModelTypeSet current_encrypted_types = GetEncryptedTypes(&trans);
-  syncable::ModelTypeSet newly_encrypted_types;
-  std::set_union(current_encrypted_types.begin(), current_encrypted_types.end(),
-                 encrypted_types.begin(), encrypted_types.end(),
-                 std::inserter(newly_encrypted_types,
-                               newly_encrypted_types.begin()));
-  allstatus_.SetEncryptedTypes(newly_encrypted_types);
-  if (newly_encrypted_types == current_encrypted_types) {
-    // Set of encrypted types has not changed, just notify and return.
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnEncryptionComplete(current_encrypted_types));
-    return;
-  }
-  syncable::FillNigoriEncryptedTypes(newly_encrypted_types, &nigori);
-  node.SetNigoriSpecifics(nigori);
-
-  cryptographer->SetEncryptedTypes(nigori);
-
-  // TODO(zea): only reencrypt this datatype? ReEncrypting everything is a
-  // safer approach, and should not impact anything that is already encrypted
-  // (redundant changes are ignored).
-  ReEncryptEverything(&trans);
-  return;
-}
-
-// TODO(zea): Add unit tests that ensure no sync changes are made when not
-// needed.
-void SyncManager::SyncInternal::ReEncryptEverything(WriteTransaction* trans) {
-  syncable::ModelTypeSet encrypted_types =
-      GetEncryptedTypes(trans);
-  ModelSafeRoutingInfo routes;
-  registrar_->GetModelSafeRoutingInfo(&routes);
-  std::string tag;
-  for (syncable::ModelTypeSet::iterator iter = encrypted_types.begin();
-       iter != encrypted_types.end(); ++iter) {
-    if (*iter == syncable::PASSWORDS || routes.count(*iter) == 0)
-      continue;
-    ReadNode type_root(trans);
-    tag = syncable::ModelTypeToRootTag(*iter);
-    if (!type_root.InitByTagLookup(tag)) {
-      NOTREACHED();
-      return;
-    }
-
-    // Iterate through all children of this datatype.
-    std::queue<int64> to_visit;
-    int64 child_id = type_root.GetFirstChildId();
-    to_visit.push(child_id);
-    while (!to_visit.empty()) {
-      child_id = to_visit.front();
-      to_visit.pop();
-      if (child_id == kInvalidId)
-        continue;
-
-      WriteNode child(trans);
-      if (!child.InitByIdLookup(child_id)) {
-        NOTREACHED();
-        continue;
-      }
-      if (child.GetIsFolder()) {
-        to_visit.push(child.GetFirstChildId());
-      }
-      if (child.GetEntry()->Get(syncable::UNIQUE_SERVER_TAG).empty()) {
-      // Rewrite the specifics of the node with encrypted data if necessary
-      // (only rewrite the non-unique folders).
-        child.ResetFromSpecifics();
-      }
-      to_visit.push(child.GetSuccessorId());
-    }
-  }
-
-  if (routes.count(syncable::PASSWORDS) > 0) {
-    // Passwords are encrypted with their own legacy scheme.
-    ReadNode passwords_root(trans);
-    std::string passwords_tag =
-        syncable::ModelTypeToRootTag(syncable::PASSWORDS);
-    // It's possible we'll have the password routing info and not the password
-    // root if we attempted to SetPassphrase before passwords was enabled.
-    if (passwords_root.InitByTagLookup(passwords_tag)) {
-      int64 child_id = passwords_root.GetFirstChildId();
-      while (child_id != kInvalidId) {
-        WriteNode child(trans);
-        if (!child.InitByIdLookup(child_id)) {
-          NOTREACHED();
-          return;
-        }
-        child.SetPasswordSpecifics(child.GetPasswordSpecifics());
-        child_id = child.GetSuccessorId();
-      }
-    }
-  }
-
-  ObserverList<SyncManager::Observer> temp_obs_list;
-  CopyObservers(&temp_obs_list);
-  FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                    OnEncryptionComplete(encrypted_types));
-}
-
-SyncManager::~SyncManager() {
-  delete data_;
-}
-
-void SyncManager::AddObserver(Observer* observer) {
-  data_->AddObserver(observer);
-}
-
-void SyncManager::RemoveObserver(Observer* observer) {
-  data_->RemoveObserver(observer);
-}
-
-void SyncManager::RequestEarlyExit() {
-  data_->RequestEarlyExit();
-}
-
-void SyncManager::SyncInternal::RequestEarlyExit() {
-  if (scheduler()) {
-    scheduler()->RequestEarlyExit();
-  }
-}
-
-void SyncManager::Shutdown() {
-  data_->Shutdown();
-}
-
-void SyncManager::SyncInternal::Shutdown() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-
-  // Prevent any in-flight method calls from running.  Also
-  // invalidates |weak_handle_this_|.
-  weak_ptr_factory_.InvalidateWeakPtrs();
-
-  // Automatically stops the scheduler.
-  scheduler_.reset();
-
-  SetJsEventHandler(WeakHandle<JsEventHandler>());
-  RemoveObserver(&js_sync_manager_observer_);
-
-  if (sync_notifier_.get()) {
-    sync_notifier_->RemoveObserver(this);
-  }
-  sync_notifier_.reset();
-
-  if (connection_manager_.get()) {
-    connection_manager_->RemoveListener(this);
-  }
-  connection_manager_.reset();
-
-  net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
-  observing_ip_address_changes_ = false;
-
-  if (dir_manager()) {
-    syncable::ScopedDirLookup lookup(dir_manager(), username_for_share());
-    if (lookup.good()) {
-      lookup->RemoveTransactionObserver(&js_transaction_observer_);
-    } else {
-      NOTREACHED();
-    }
-    dir_manager()->FinalSaveChangesForAll();
-    dir_manager()->Close(username_for_share());
-  }
-
-  // Reset the DirectoryManager and UserSettings so they relinquish sqlite
-  // handles to backing files.
-  share_.dir_manager.reset();
-
-  setup_for_test_mode_ = false;
-  registrar_ = NULL;
-
-  initialized_ = false;
-
-  // We reset this here, since only now we know it will not be
-  // accessed from other threads (since we shut down everything).
-  weak_handle_this_.Reset();
-}
-
-void SyncManager::SyncInternal::OnIPAddressChanged() {
-  VLOG(1) << "IP address change detected";
-  if (!observing_ip_address_changes_) {
-    VLOG(1) << "IP address change dropped.";
-    return;
-  }
-
-#if defined (OS_CHROMEOS)
-  // TODO(tim): This is a hack to intentionally lose a race with flimflam at
-  // shutdown, so we don't cause shutdown to wait for our http request.
-  // http://crosbug.com/8429
-  MessageLoop::current()->PostDelayedTask(
-      FROM_HERE,
-      base::Bind(&SyncInternal::OnIPAddressChangedImpl,
-                 weak_ptr_factory_.GetWeakPtr()),
-      kChromeOSNetworkChangeReactionDelayHackMsec);
-#else
-  OnIPAddressChangedImpl();
-#endif  // defined(OS_CHROMEOS)
-}
-
-void SyncManager::SyncInternal::OnIPAddressChangedImpl() {
-  // TODO(akalin): CheckServerReachable() can block, which may cause
-  // jank if we try to shut down sync.  Fix this.
-  connection_manager()->CheckServerReachable();
-}
-
-void SyncManager::SyncInternal::OnServerConnectionEvent(
-    const ServerConnectionEvent& event) {
-  allstatus_.HandleServerConnectionEvent(event);
-  if (event.connection_code ==
-      browser_sync::HttpResponse::SERVER_CONNECTION_OK) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnAuthError(AuthError::None()));
-  }
-
-  if (event.connection_code == browser_sync::HttpResponse::SYNC_AUTH_ERROR) {
-    observing_ip_address_changes_ = false;
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-        OnAuthError(AuthError(AuthError::INVALID_GAIA_CREDENTIALS)));
-  }
-
-  if (event.connection_code ==
-      browser_sync::HttpResponse::SYNC_SERVER_ERROR) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-        OnAuthError(AuthError(AuthError::CONNECTION_FAILED)));
-  }
-}
-
-void SyncManager::SyncInternal::HandleTransactionCompleteChangeEvent(
-    const syncable::ModelTypeBitSet& models_with_changes) {
-  // This notification happens immediately after the transaction mutex is
-  // released. This allows work to be performed without blocking other threads
-  // from acquiring a transaction.
-  if (!HaveObservers())
-    return;
-
-  // Call commit.
-  for (int i = 0; i < syncable::MODEL_TYPE_COUNT; ++i) {
-    if (models_with_changes.test(i)) {
-      ObserverList<SyncManager::Observer> temp_obs_list;
-      CopyObservers(&temp_obs_list);
-      FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                        OnChangesComplete(syncable::ModelTypeFromInt(i)));
-    }
-  }
-}
-
-ModelTypeBitSet SyncManager::SyncInternal::HandleTransactionEndingChangeEvent(
-    syncable::BaseTransaction* trans) {
-  // This notification happens immediately before a syncable WriteTransaction
-  // falls out of scope. It happens while the channel mutex is still held,
-  // and while the transaction mutex is held, so it cannot be re-entrant.
-  if (!HaveObservers() || ChangeBuffersAreEmpty())
-    return ModelTypeBitSet();
-
-  // This will continue the WriteTransaction using a read only wrapper.
-  // This is the last chance for read to occur in the WriteTransaction
-  // that's closing. This special ReadTransaction will not close the
-  // underlying transaction.
-  ReadTransaction read_trans(GetUserShare(), trans);
-
-  syncable::ModelTypeBitSet models_with_changes;
-  for (int i = 0; i < syncable::MODEL_TYPE_COUNT; ++i) {
-    if (change_buffers_[i].IsEmpty())
-      continue;
-
-    vector<ChangeRecord> ordered_changes;
-    change_buffers_[i].GetAllChangesInTreeOrder(&read_trans, &ordered_changes);
-    if (!ordered_changes.empty()) {
-      ObserverList<SyncManager::Observer> temp_obs_list;
-      CopyObservers(&temp_obs_list);
-      FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-          OnChangesApplied(syncable::ModelTypeFromInt(i), &read_trans,
-                           &ordered_changes[0], ordered_changes.size()));
-      models_with_changes.set(i, true);
-    }
-    change_buffers_[i].Clear();
-  }
-  return models_with_changes;
-}
-
-void SyncManager::SyncInternal::HandleCalculateChangesChangeEventFromSyncApi(
-    const EntryKernelMutationSet& mutations,
-    syncable::BaseTransaction* trans) {
-  if (!scheduler()) {
-    return;
-  }
-
-  // We have been notified about a user action changing a sync model.
-  LOG_IF(WARNING, !ChangeBuffersAreEmpty()) <<
-      "CALCULATE_CHANGES called with unapplied old changes.";
-
-  // The mutated model type, or UNSPECIFIED if nothing was mutated.
-  syncable::ModelType mutated_model_type = syncable::UNSPECIFIED;
-
-  // Find the first real mutation.  We assume that only a single model
-  // type is mutated per transaction.
-  for (syncable::EntryKernelMutationSet::const_iterator it =
-           mutations.begin(); it != mutations.end(); ++it) {
-    if (!it->mutated.ref(syncable::IS_UNSYNCED)) {
-      continue;
-    }
-
-    syncable::ModelType model_type =
-        syncable::GetModelTypeFromSpecifics(it->mutated.ref(SPECIFICS));
-    if (model_type < syncable::FIRST_REAL_MODEL_TYPE) {
-      NOTREACHED() << "Permanent or underspecified item changed via syncapi.";
-      continue;
-    }
-
-    // Found real mutation.
-    if (mutated_model_type == syncable::UNSPECIFIED) {
-      mutated_model_type = model_type;
-      break;
-    }
-  }
-
-  // Nudge if necessary.
-  if (mutated_model_type != syncable::UNSPECIFIED) {
-    if (weak_handle_this_.IsInitialized()) {
-      weak_handle_this_.Call(FROM_HERE,
-                             &SyncInternal::RequestNudgeForDataType,
-                             FROM_HERE,
-                             mutated_model_type);
-    } else {
-      NOTREACHED();
-    }
-  }
-}
-
-void SyncManager::SyncInternal::SetExtraChangeRecordData(int64 id,
-    syncable::ModelType type, ChangeReorderBuffer* buffer,
-    Cryptographer* cryptographer, const syncable::EntryKernel& original,
-    bool existed_before, bool exists_now) {
-  // If this is a deletion and the datatype was encrypted, we need to decrypt it
-  // and attach it to the buffer.
-  if (!exists_now && existed_before) {
-    sync_pb::EntitySpecifics original_specifics(original.ref(SPECIFICS));
-    if (type == syncable::PASSWORDS) {
-      // Passwords must use their own legacy ExtraPasswordChangeRecordData.
-      scoped_ptr<sync_pb::PasswordSpecificsData> data(
-          DecryptPasswordSpecifics(original_specifics, cryptographer));
-      if (!data.get()) {
-        NOTREACHED();
-        return;
-      }
-      buffer->SetExtraDataForId(id, new ExtraPasswordChangeRecordData(*data));
-    } else if (original_specifics.has_encrypted()) {
-      // All other datatypes can just create a new unencrypted specifics and
-      // attach it.
-      const sync_pb::EncryptedData& encrypted = original_specifics.encrypted();
-      if (!cryptographer->Decrypt(encrypted, &original_specifics)) {
-        NOTREACHED();
-        return;
-      }
-    }
-    buffer->SetSpecificsForId(id, original_specifics);
-  }
-}
-
-void SyncManager::SyncInternal::HandleCalculateChangesChangeEventFromSyncer(
-    const EntryKernelMutationSet& mutations,
-    syncable::BaseTransaction* trans) {
-  // We only expect one notification per sync step, so change_buffers_ should
-  // contain no pending entries.
-  LOG_IF(WARNING, !ChangeBuffersAreEmpty()) <<
-      "CALCULATE_CHANGES called with unapplied old changes.";
-
-  Cryptographer* crypto = dir_manager()->GetCryptographer(trans);
-  for (syncable::EntryKernelMutationSet::const_iterator it =
-           mutations.begin(); it != mutations.end(); ++it) {
-    bool existed_before = !it->original.ref(syncable::IS_DEL);
-    bool exists_now = !it->mutated.ref(syncable::IS_DEL);
-
-    // Omit items that aren't associated with a model.
-    syncable::ModelType type =
-        syncable::GetModelTypeFromSpecifics(it->mutated.ref(SPECIFICS));
-    if (type < syncable::FIRST_REAL_MODEL_TYPE)
-      continue;
-
-    int64 id = it->original.ref(syncable::META_HANDLE);
-    if (exists_now && !existed_before)
-      change_buffers_[type].PushAddedItem(id);
-    else if (!exists_now && existed_before)
-      change_buffers_[type].PushDeletedItem(id);
-    else if (exists_now && existed_before &&
-             VisiblePropertiesDiffer(*it, crypto)) {
-      change_buffers_[type].PushUpdatedItem(
-          id, VisiblePositionsDiffer(*it));
-    }
-
-    SetExtraChangeRecordData(id, type, &change_buffers_[type], crypto,
-                             it->original, existed_before, exists_now);
-  }
-}
-
-SyncManager::Status SyncManager::SyncInternal::GetStatus() {
-  return allstatus_.status();
-}
-
-void SyncManager::SyncInternal::RequestNudge(
-    const tracked_objects::Location& location) {
-  if (scheduler())
-     scheduler()->ScheduleNudge(
-        TimeDelta::FromMilliseconds(0), browser_sync::NUDGE_SOURCE_LOCAL,
-        ModelTypeBitSet(), location);
-}
-
-
-void SyncManager::SyncInternal::RequestNudgeForDataType(
-    const tracked_objects::Location& nudge_location,
-    const ModelType& type) {
-  if (!scheduler()) {
-    NOTREACHED();
-    return;
-  }
-  base::TimeDelta nudge_delay;
-  switch (type) {
-    case syncable::PREFERENCES:
-      nudge_delay =
-          TimeDelta::FromMilliseconds(kPreferencesNudgeDelayMilliseconds);
-      break;
-    case syncable::SESSIONS:
-      nudge_delay = scheduler()->sessions_commit_delay();
-      break;
-    default:
-      nudge_delay =
-          TimeDelta::FromMilliseconds(kDefaultNudgeDelayMilliseconds);
-      break;
-  }
-  syncable::ModelTypeBitSet types;
-  types.set(type);
-  scheduler()->ScheduleNudge(nudge_delay,
-                             browser_sync::NUDGE_SOURCE_LOCAL,
-                             types,
-                             nudge_location);
-}
-
-void SyncManager::SyncInternal::OnSyncEngineEvent(
-    const SyncEngineEvent& event) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (!HaveObservers()) {
-    LOG(INFO)
-        << "OnSyncEngineEvent returning because observers_.size() is zero";
-    return;
-  }
-
-  // Only send an event if this is due to a cycle ending and this cycle
-  // concludes a canonical "sync" process; that is, based on what is known
-  // locally we are "all happy" and up-to-date.  There may be new changes on
-  // the server, but we'll get them on a subsequent sync.
-  //
-  // Notifications are sent at the end of every sync cycle, regardless of
-  // whether we should sync again.
-  if (event.what_happened == SyncEngineEvent::SYNC_CYCLE_ENDED) {
-    ModelSafeRoutingInfo enabled_types;
-    registrar_->GetModelSafeRoutingInfo(&enabled_types);
-    {
-      // Check to see if we need to notify the frontend that we have newly
-      // encrypted types or that we require a passphrase.
-      sync_api::ReadTransaction trans(FROM_HERE, GetUserShare());
-      Cryptographer* cryptographer = trans.GetCryptographer();
-      // If we've completed a sync cycle and the cryptographer isn't ready
-      // yet, prompt the user for a passphrase.
-      if (cryptographer->has_pending_keys()) {
-        VLOG(1) << "OnPassPhraseRequired Sent";
-        ObserverList<SyncManager::Observer> temp_obs_list;
-        CopyObservers(&temp_obs_list);
-        FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                          OnPassphraseRequired(sync_api::REASON_DECRYPTION));
-      } else if (!cryptographer->is_ready() &&
-                 event.snapshot->initial_sync_ended.test(syncable::NIGORI)) {
-        VLOG(1) << "OnPassphraseRequired sent because cryptographer is not "
-                << "ready";
-        ObserverList<SyncManager::Observer> temp_obs_list;
-        CopyObservers(&temp_obs_list);
-        FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                          OnPassphraseRequired(sync_api::REASON_ENCRYPTION));
-      }
-
-      allstatus_.SetCryptographerReady(cryptographer->is_ready());
-      allstatus_.SetCryptoHasPendingKeys(cryptographer->has_pending_keys());
-      allstatus_.SetEncryptedTypes(cryptographer->GetEncryptedTypes());
-
-      // If everything is in order(we have the passphrase) then there is no
-      // need to inform the listeners. They will just wait for sync
-      // completion event and if no errors have been raised it means
-      // encryption was succesful.
-    }
-
-    if (!initialized_) {
-      LOG(INFO) << "OnSyncCycleCompleted not sent because sync api is not "
-                << "initialized";
-      return;
-    }
-
-    if (!event.snapshot->has_more_to_sync) {
-      VLOG(1) << "OnSyncCycleCompleted sent";
-      ObserverList<SyncManager::Observer> temp_obs_list;
-      CopyObservers(&temp_obs_list);
-      FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                        OnSyncCycleCompleted(event.snapshot));
-    }
-
-    // This is here for tests, which are still using p2p notifications.
-    //
-    // TODO(chron): Consider changing this back to track has_more_to_sync
-    // only notify peers if a successful commit has occurred.
-    bool is_notifiable_commit =
-        (event.snapshot->syncer_status.num_successful_commits > 0);
-    if (is_notifiable_commit) {
-      allstatus_.IncrementNotifiableCommits();
-      if (sync_notifier_.get()) {
-        sync_notifier_->SendNotification();
-      } else {
-        VLOG(1) << "Not sending notification: sync_notifier_ is NULL";
-      }
-    }
-  }
-
-  if (event.what_happened == SyncEngineEvent::STOP_SYNCING_PERMANENTLY) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnStopSyncingPermanently());
-    return;
-  }
-
-  if (event.what_happened == SyncEngineEvent::CLEAR_SERVER_DATA_SUCCEEDED) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnClearServerDataSucceeded());
-    return;
-  }
-
-  if (event.what_happened == SyncEngineEvent::CLEAR_SERVER_DATA_FAILED) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnClearServerDataFailed());
-    return;
-  }
-
-  if (event.what_happened == SyncEngineEvent::UPDATED_TOKEN) {
-    ObserverList<SyncManager::Observer> temp_obs_list;
-    CopyObservers(&temp_obs_list);
-    FOR_EACH_OBSERVER(SyncManager::Observer, temp_obs_list,
-                      OnUpdatedToken(event.updated_token));
-    return;
-  }
-}
-
-void SyncManager::SyncInternal::SetJsEventHandler(
-    const WeakHandle<JsEventHandler>& event_handler) {
-  js_event_handler_ = event_handler;
-  js_sync_manager_observer_.SetJsEventHandler(js_event_handler_);
-  js_transaction_observer_.SetJsEventHandler(js_event_handler_);
-}
-
-void SyncManager::SyncInternal::ProcessJsMessage(
-    const std::string& name, const JsArgList& args,
-    const WeakHandle<JsReplyHandler>& reply_handler) {
-  if (!initialized_) {
-    NOTREACHED();
-    return;
-  }
-
-  if (!reply_handler.IsInitialized()) {
-    VLOG(1) << "Uninitialized reply handler; dropping unknown message "
-            << name << " with args " << args.ToString();
-    return;
-  }
-
-  JsMessageHandler js_message_handler = js_message_handlers_[name];
-  if (js_message_handler.is_null()) {
-    VLOG(1) << "Dropping unknown message " << name
-              << " with args " << args.ToString();
-    return;
-  }
-
-  reply_handler.Call(FROM_HERE,
-                     &JsReplyHandler::HandleJsReply,
-                     name, js_message_handler.Run(args));
-}
-
-void SyncManager::SyncInternal::BindJsMessageHandler(
-    const std::string& name,
-    UnboundJsMessageHandler unbound_message_handler) {
-  js_message_handlers_[name] =
-      base::Bind(unbound_message_handler, base::Unretained(this));
-}
-
-DictionaryValue* SyncManager::SyncInternal::NotificationInfoToValue(
-    const NotificationInfoMap& notification_info) {
-  DictionaryValue* value = new DictionaryValue();
-
-  for (NotificationInfoMap::const_iterator it = notification_info.begin();
-      it != notification_info.end(); ++it) {
-    const std::string& model_type_str =
-        syncable::ModelTypeToString(it->first);
-    value->Set(model_type_str, it->second.ToValue());
-  }
-
-  return value;
-}
-
-JsArgList SyncManager::SyncInternal::GetNotificationState(
-    const JsArgList& args) {
-  bool notifications_enabled = allstatus_.status().notifications_enabled;
-  ListValue return_args;
-  return_args.Append(Value::CreateBooleanValue(notifications_enabled));
-  return JsArgList(&return_args);
-}
-
-JsArgList SyncManager::SyncInternal::GetNotificationInfo(
-    const JsArgList& args) {
-  ListValue return_args;
-  return_args.Append(NotificationInfoToValue(notification_info_map_));
-  return JsArgList(&return_args);
-}
-
-JsArgList SyncManager::SyncInternal::GetRootNodeDetails(
-    const JsArgList& args) {
-  ReadTransaction trans(FROM_HERE, GetUserShare());
-  ReadNode root(&trans);
-  root.InitByRootLookup();
-  ListValue return_args;
-  return_args.Append(root.GetDetailsAsValue());
-  return JsArgList(&return_args);
-}
-
-namespace {
-
-int64 GetId(const ListValue& ids, int i) {
-  std::string id_str;
-  if (!ids.GetString(i, &id_str)) {
-    return kInvalidId;
-  }
-  int64 id = kInvalidId;
-  if (!base::StringToInt64(id_str, &id)) {
-    return kInvalidId;
-  }
-  return id;
-}
-
-JsArgList GetNodeInfoById(const JsArgList& args,
-                          UserShare* user_share,
-                          DictionaryValue* (BaseNode::*info_getter)() const) {
-  CHECK(info_getter);
-  ListValue return_args;
-  ListValue* node_summaries = new ListValue();
-  return_args.Append(node_summaries);
-  ListValue* id_list = NULL;
-  ReadTransaction trans(FROM_HERE, user_share);
-  if (args.Get().GetList(0, &id_list)) {
-    CHECK(id_list);
-    for (size_t i = 0; i < id_list->GetSize(); ++i) {
-      int64 id = GetId(*id_list, i);
-      if (id == kInvalidId) {
-        continue;
-      }
-      ReadNode node(&trans);
-      if (!node.InitByIdLookup(id)) {
-        continue;
-      }
-      node_summaries->Append((node.*info_getter)());
-    }
-  }
-  return JsArgList(&return_args);
-}
-
-}  // namespace
-
-JsArgList SyncManager::SyncInternal::GetNodeSummariesById(
-    const JsArgList& args) {
-  return GetNodeInfoById(args, GetUserShare(), &BaseNode::GetSummaryAsValue);
-}
-
-JsArgList SyncManager::SyncInternal::GetNodeDetailsById(
-    const JsArgList& args) {
-  return GetNodeInfoById(args, GetUserShare(), &BaseNode::GetDetailsAsValue);
-}
-
-JsArgList SyncManager::SyncInternal::GetChildNodeIds(
-    const JsArgList& args) {
-  ListValue return_args;
-  ListValue* child_ids = new ListValue();
-  return_args.Append(child_ids);
-  int64 id = GetId(args.Get(), 0);
-  if (id != kInvalidId) {
-    ReadTransaction trans(FROM_HERE, GetUserShare());
-    syncable::Directory::ChildHandles child_handles;
-    trans.GetLookup()->GetChildHandlesByHandle(trans.GetWrappedTrans(),
-                                               id, &child_handles);
-    for (syncable::Directory::ChildHandles::const_iterator it =
-             child_handles.begin(); it != child_handles.end(); ++it) {
-      child_ids->Append(Value::CreateStringValue(
-          base::Int64ToString(*it)));
-    }
-  }
-  return JsArgList(&return_args);
-}
-
-JsArgList SyncManager::SyncInternal::FindNodesContainingString(
-    const JsArgList& args) {
-  std::string query;
-  ListValue return_args;
-  if (!args.Get().GetString(0, &query)) {
-    return_args.Append(new ListValue());
-    return JsArgList(&return_args);
-  }
-
-  // Convert the query string to lower case to perform case insensitive
-  // searches.
-  std::string lowercase_query = query;
-  StringToLowerASCII(&lowercase_query);
-
-  ListValue* result = new ListValue();
-  return_args.Append(result);
-
-  ReadTransaction trans(FROM_HERE, GetUserShare());
-  std::vector<const syncable::EntryKernel*> entry_kernels;
-  trans.GetLookup()->GetAllEntryKernels(trans.GetWrappedTrans(),
-                                        &entry_kernels);
-
-  for (std::vector<const syncable::EntryKernel*>::const_iterator it =
-           entry_kernels.begin(); it != entry_kernels.end(); ++it) {
-    if ((*it)->ContainsString(lowercase_query)) {
-      result->Append(new StringValue(base::Int64ToString(
-          (*it)->ref(syncable::META_HANDLE))));
-    }
-  }
-
-  return JsArgList(&return_args);
-}
-
-void SyncManager::SyncInternal::OnNotificationStateChange(
-    bool notifications_enabled) {
-  VLOG(1) << "P2P: Notifications enabled = "
-          << (notifications_enabled ? "true" : "false");
-  allstatus_.SetNotificationsEnabled(notifications_enabled);
-  if (scheduler()) {
-    scheduler()->set_notifications_enabled(notifications_enabled);
-  }
-  if (js_event_handler_.IsInitialized()) {
-    DictionaryValue details;
-    details.Set("enabled", Value::CreateBooleanValue(notifications_enabled));
-    js_event_handler_.Call(FROM_HERE,
-                           &JsEventHandler::HandleJsEvent,
-                           "onNotificationStateChange",
-                           JsEventDetails(&details));
-  }
-}
-
-void SyncManager::SyncInternal::UpdateNotificationInfo(
-    const syncable::ModelTypePayloadMap& type_payloads) {
-  for (syncable::ModelTypePayloadMap::const_iterator it = type_payloads.begin();
-       it != type_payloads.end(); ++it) {
-    NotificationInfo* info = &notification_info_map_[it->first];
-    info->total_count++;
-    info->payload = it->second;
-  }
-}
-
-void SyncManager::SyncInternal::OnIncomingNotification(
-    const syncable::ModelTypePayloadMap& type_payloads) {
-  if (!type_payloads.empty()) {
-    if (scheduler()) {
-      scheduler()->ScheduleNudgeWithPayloads(
-          TimeDelta::FromMilliseconds(kSyncSchedulerDelayMsec),
-          browser_sync::NUDGE_SOURCE_NOTIFICATION,
-          type_payloads, FROM_HERE);
-    }
-    allstatus_.IncrementNotificationsReceived();
-    UpdateNotificationInfo(type_payloads);
-  } else {
-    LOG(WARNING) << "Sync received notification without any type information.";
-  }
-
-  if (js_event_handler_.IsInitialized()) {
-    DictionaryValue details;
-    ListValue* changed_types = new ListValue();
-    details.Set("changedTypes", changed_types);
-    for (syncable::ModelTypePayloadMap::const_iterator
-             it = type_payloads.begin();
-         it != type_payloads.end(); ++it) {
-      const std::string& model_type_str =
-          syncable::ModelTypeToString(it->first);
-      changed_types->Append(Value::CreateStringValue(model_type_str));
-    }
-    js_event_handler_.Call(FROM_HERE,
-                           &JsEventHandler::HandleJsEvent,
-                           "onIncomingNotification",
-                           JsEventDetails(&details));
-  }
-}
-
-void SyncManager::SyncInternal::StoreState(
-    const std::string& state) {
-  syncable::ScopedDirLookup lookup(dir_manager(), username_for_share());
-  if (!lookup.good()) {
-    LOG(ERROR) << "Could not write notification state";
-    // TODO(akalin): Propagate result callback all the way to this
-    // function and call it with "false" to signal failure.
-    return;
-  }
-  if (VLOG_IS_ON(1)) {
-    std::string encoded_state;
-    base::Base64Encode(state, &encoded_state);
-    VLOG(1) << "Writing notification state: " << encoded_state;
-  }
-  lookup->SetNotificationState(state);
-  lookup->SaveChanges();
-}
-
-
-// Note: it is possible that an observer will remove itself after we have made
-// a copy, but before the copy is consumed. This could theoretically result
-// in accessing a garbage pointer, but can only occur when an about:sync window
-// is closed in the middle of a notification.
-// See crbug.com/85481.
-void SyncManager::SyncInternal::CopyObservers(
-    ObserverList<SyncManager::Observer>* observers_copy) {
-  DCHECK_EQ(0U, observers_copy->size());
-  base::AutoLock lock(observers_lock_);
-  if (observers_.size() == 0)
-    return;
-  ObserverListBase<SyncManager::Observer>::Iterator it(observers_);
-  SyncManager::Observer* obs;
-  while ((obs = it.GetNext()) != NULL)
-    observers_copy->AddObserver(obs);
-}
-
-bool SyncManager::SyncInternal::HaveObservers() const {
-  base::AutoLock lock(observers_lock_);
-  return observers_.size() > 0;
-}
-
-void SyncManager::SyncInternal::AddObserver(
-    SyncManager::Observer* observer) {
-  base::AutoLock lock(observers_lock_);
-  observers_.AddObserver(observer);
-}
-
-void SyncManager::SyncInternal::RemoveObserver(
-    SyncManager::Observer* observer) {
-  base::AutoLock lock(observers_lock_);
-  observers_.RemoveObserver(observer);
-}
-
-SyncManager::Status::Summary SyncManager::GetStatusSummary() const {
-  return data_->GetStatus().summary;
-}
-
-SyncManager::Status SyncManager::GetDetailedStatus() const {
-  return data_->GetStatus();
-}
-
-SyncManager::SyncInternal* SyncManager::GetImpl() const { return data_; }
-
-void SyncManager::SaveChanges() {
-  data_->SaveChanges();
-}
-
-void SyncManager::SyncInternal::SaveChanges() {
-  syncable::ScopedDirLookup lookup(dir_manager(), username_for_share());
-  if (!lookup.good()) {
-    DCHECK(false) << "ScopedDirLookup creation failed; Unable to SaveChanges";
-    return;
-  }
-  lookup->SaveChanges();
-}
-
-//////////////////////////////////////////////////////////////////////////
-// BaseTransaction member definitions
-BaseTransaction::BaseTransaction(UserShare* share)
-    : lookup_(NULL) {
-  DCHECK(share && share->dir_manager.get());
-  lookup_ = new syncable::ScopedDirLookup(share->dir_manager.get(),
-                                          share->name);
-  cryptographer_ = share->dir_manager->GetCryptographer(this);
-  if (!(lookup_->good()))
-    DCHECK(false) << "ScopedDirLookup failed on valid DirManager.";
-}
-BaseTransaction::~BaseTransaction() {
-  delete lookup_;
-}
-
-UserShare* SyncManager::GetUserShare() const {
-  return data_->GetUserShare();
-}
-
-void SyncManager::RefreshEncryption() {
-  if (data_->UpdateCryptographerFromNigori())
-    data_->EncryptDataTypes(syncable::ModelTypeSet());
-}
-
-syncable::ModelTypeSet SyncManager::GetEncryptedDataTypes() const {
-  sync_api::ReadTransaction trans(FROM_HERE, GetUserShare());
-  return GetEncryptedTypes(&trans);
-}
-
-bool SyncManager::HasUnsyncedItems() const {
-  sync_api::ReadTransaction trans(FROM_HERE, GetUserShare());
-  return (trans.GetWrappedTrans()->directory()->unsynced_entity_count() != 0);
-}
-
-void SyncManager::LogUnsyncedItems(int level) const {
-  std::vector<int64> unsynced_handles;
-  sync_api::ReadTransaction trans(FROM_HERE, GetUserShare());
-  trans.GetWrappedTrans()->directory()->GetUnsyncedMetaHandles(
-      trans.GetWrappedTrans(), &unsynced_handles);
-
-  for (std::vector<int64>::const_iterator it = unsynced_handles.begin();
-       it != unsynced_handles.end(); ++it) {
-    ReadNode node(&trans);
-    if (node.InitByIdLookup(*it)) {
-      scoped_ptr<DictionaryValue> value(node.GetDetailsAsValue());
-      std::string info;
-      base::JSONWriter::Write(value.get(), true, &info);
-      VLOG(level) << info;
-    }
-  }
-}
-
-void SyncManager::TriggerOnNotificationStateChangeForTest(
-    bool notifications_enabled) {
-  data_->OnNotificationStateChange(notifications_enabled);
-}
-
-void SyncManager::TriggerOnIncomingNotificationForTest(
-    const syncable::ModelTypeBitSet& model_types) {
-  syncable::ModelTypePayloadMap model_types_with_payloads =
-      syncable::ModelTypePayloadMapFromBitSet(model_types,
-          std::string());
-
-  data_->OnIncomingNotification(model_types_with_payloads);
-}
-
-}  // namespace sync_api