Revert revision 176015

chrome/browser/extensions/api/storage/settings_sync_unittest.cc

Index: chrome/browser/extensions/api/storage/settings_sync_unittest.cc
===================================================================
--- chrome/browser/extensions/api/storage/settings_sync_unittest.cc	(revision 176053)
+++ chrome/browser/extensions/api/storage/settings_sync_unittest.cc	(working copy)
@@ -1,1425 +0,0 @@
-// Copyright (c) 2012 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 "base/bind.h"
-#include "base/files/scoped_temp_dir.h"
-#include "base/json/json_reader.h"
-#include "base/json/json_writer.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
-#include "chrome/browser/extensions/api/storage/leveldb_settings_storage_factory.h"
-#include "chrome/browser/extensions/api/storage/settings_frontend.h"
-#include "chrome/browser/extensions/api/storage/settings_storage_factory.h"
-#include "chrome/browser/extensions/api/storage/settings_sync_util.h"
-#include "chrome/browser/extensions/api/storage/settings_test_util.h"
-#include "chrome/browser/extensions/api/storage/syncable_settings_storage.h"
-#include "chrome/browser/extensions/extension_system.h"
-#include "chrome/browser/extensions/test_extension_service.h"
-#include "chrome/browser/value_store/testing_value_store.h"
-#include "content/public/test/test_browser_thread.h"
-#include "sync/api/sync_change_processor.h"
-#include "sync/api/sync_error_factory.h"
-#include "sync/api/sync_error_factory_mock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using content::BrowserThread;
-
-namespace extensions {
-
-namespace util = settings_test_util;
-
-namespace {
-
-// To save typing ValueStore::DEFAULTS everywhere.
-const ValueStore::WriteOptions DEFAULTS = ValueStore::DEFAULTS;
-
-// Gets the pretty-printed JSON for a value.
-static std::string GetJson(const Value& value) {
-  std::string json;
-  base::JSONWriter::WriteWithOptions(&value,
-                                     base::JSONWriter::OPTIONS_PRETTY_PRINT,
-                                     &json);
-  return json;
-}
-
-// Returns whether two Values are equal.
-testing::AssertionResult ValuesEq(
-    const char* _1, const char* _2,
-    const Value* expected,
-    const Value* actual) {
-  if (expected == actual) {
-    return testing::AssertionSuccess();
-  }
-  if (!expected && actual) {
-    return testing::AssertionFailure() <<
-        "Expected NULL, actual: " << GetJson(*actual);
-  }
-  if (expected && !actual) {
-    return testing::AssertionFailure() <<
-        "Expected: " << GetJson(*expected) << ", actual NULL";
-  }
-  if (!expected->Equals(actual)) {
-    return testing::AssertionFailure() <<
-        "Expected: " << GetJson(*expected) << ", actual: " << GetJson(*actual);
-  }
-  return testing::AssertionSuccess();
-}
-
-// Returns whether the result of a storage operation is an expected value.
-// Logs when different.
-testing::AssertionResult SettingsEq(
-    const char* _1, const char* _2,
-    const DictionaryValue& expected,
-    ValueStore::ReadResult actual) {
-  if (actual->HasError()) {
-    return testing::AssertionFailure() <<
-        "Expected: " << GetJson(expected) <<
-        ", actual has error: " << actual->error();
-  }
-  return ValuesEq(_1, _2, &expected, actual->settings().get());
-}
-
-// SyncChangeProcessor which just records the changes made, accessed after
-// being converted to the more useful SettingSyncData via changes().
-class MockSyncChangeProcessor : public syncer::SyncChangeProcessor {
- public:
-  MockSyncChangeProcessor() : fail_all_requests_(false) {}
-
-  // syncer::SyncChangeProcessor implementation.
-  virtual syncer::SyncError ProcessSyncChanges(
-      const tracked_objects::Location& from_here,
-      const syncer::SyncChangeList& change_list) OVERRIDE {
-    if (fail_all_requests_) {
-      return syncer::SyncError(
-          FROM_HERE,
-          "MockSyncChangeProcessor: configured to fail",
-          change_list[0].sync_data().GetDataType());
-    }
-    for (syncer::SyncChangeList::const_iterator it = change_list.begin();
-        it != change_list.end(); ++it) {
-      changes_.push_back(SettingSyncData(*it));
-    }
-    return syncer::SyncError();
-  }
-
-  // Mock methods.
-
-  const SettingSyncDataList& changes() { return changes_; }
-
-  void ClearChanges() {
-    changes_.clear();
-  }
-
-  void SetFailAllRequests(bool fail_all_requests) {
-    fail_all_requests_ = fail_all_requests;
-  }
-
-  // Returns the only change for a given extension setting.  If there is not
-  // exactly 1 change for that key, a test assertion will fail.
-  SettingSyncData GetOnlyChange(
-      const std::string& extension_id, const std::string& key) {
-    SettingSyncDataList matching_changes;
-    for (SettingSyncDataList::iterator it = changes_.begin();
-        it != changes_.end(); ++it) {
-      if (it->extension_id() == extension_id && it->key() == key) {
-        matching_changes.push_back(*it);
-      }
-    }
-    if (matching_changes.empty()) {
-      ADD_FAILURE() << "No matching changes for " << extension_id << "/" <<
-          key << " (out of " << changes_.size() << ")";
-      return SettingSyncData(
-          syncer::SyncChange::ACTION_INVALID, "", "",
-          scoped_ptr<Value>(new DictionaryValue()));
-    }
-    if (matching_changes.size() != 1u) {
-      ADD_FAILURE() << matching_changes.size() << " matching changes for " <<
-           extension_id << "/" << key << " (out of " << changes_.size() << ")";
-    }
-    return matching_changes[0];
-  }
-
- private:
-  SettingSyncDataList changes_;
-  bool fail_all_requests_;
-};
-
-class SyncChangeProcessorDelegate : public syncer::SyncChangeProcessor {
- public:
-  explicit SyncChangeProcessorDelegate(syncer::SyncChangeProcessor* recipient)
-      : recipient_(recipient) {
-    DCHECK(recipient_);
-  }
-  virtual ~SyncChangeProcessorDelegate() {}
-
-  // syncer::SyncChangeProcessor implementation.
-  virtual syncer::SyncError ProcessSyncChanges(
-      const tracked_objects::Location& from_here,
-      const syncer::SyncChangeList& change_list) OVERRIDE {
-    return recipient_->ProcessSyncChanges(from_here, change_list);
-  }
-
- private:
-  // The recipient of all sync changes.
-  syncer::SyncChangeProcessor* recipient_;
-
-  DISALLOW_COPY_AND_ASSIGN(SyncChangeProcessorDelegate);
-};
-
-// SettingsStorageFactory which always returns TestingValueStore objects,
-// and allows individually created objects to be returned.
-class TestingValueStoreFactory : public SettingsStorageFactory {
- public:
-  TestingValueStore* GetExisting(const std::string& extension_id) {
-    DCHECK(created_.count(extension_id));
-    return created_[extension_id];
-  }
-
-  // SettingsStorageFactory implementation.
-  virtual ValueStore* Create(const FilePath& base_path,
-                             const std::string& extension_id) OVERRIDE {
-    TestingValueStore* new_storage = new TestingValueStore();
-    DCHECK(!created_.count(extension_id));
-    created_[extension_id] = new_storage;
-    return new_storage;
-  }
-
- private:
-  // SettingsStorageFactory is refcounted.
-  virtual ~TestingValueStoreFactory() {}
-
-  // None of these storage areas are owned by this factory, so care must be
-  // taken when calling GetExisting.
-  std::map<std::string, TestingValueStore*> created_;
-};
-
-}  // namespace
-
-class ExtensionSettingsSyncTest : public testing::Test {
- public:
-  ExtensionSettingsSyncTest()
-      : ui_thread_(BrowserThread::UI, MessageLoop::current()),
-        file_thread_(BrowserThread::FILE, MessageLoop::current()),
-        storage_factory_(new util::ScopedSettingsStorageFactory()),
-        sync_processor_(new MockSyncChangeProcessor),
-        sync_processor_delegate_(new SyncChangeProcessorDelegate(
-            sync_processor_.get())) {}
-
-  virtual void SetUp() OVERRIDE {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-    profile_.reset(new util::MockProfile(temp_dir_.path()));
-    storage_factory_->Reset(new LeveldbSettingsStorageFactory());
-    frontend_.reset(
-        SettingsFrontend::Create(storage_factory_.get(), profile_.get()));
-  }
-
-  virtual void TearDown() OVERRIDE {
-    frontend_.reset();
-    profile_.reset();
-    // Execute any pending deletion tasks.
-    message_loop_.RunUntilIdle();
-  }
-
- protected:
-  // Adds a record of an extension or app to the extension service, then returns
-  // its storage area.
-  ValueStore* AddExtensionAndGetStorage(
-      const std::string& id, Extension::Type type) {
-    ExtensionServiceInterface* esi =
-        extensions::ExtensionSystem::Get(profile_.get())->extension_service();
-    static_cast<extensions::settings_test_util::MockExtensionService*>(esi)->
-        AddExtensionWithId(id, type);
-    return util::GetStorage(id, frontend_.get());
-  }
-
-  // Gets the syncer::SyncableService for the given sync type.
-  syncer::SyncableService* GetSyncableService(syncer::ModelType model_type) {
-    MessageLoop::current()->RunUntilIdle();
-    return frontend_->GetBackendForSync(model_type);
-  }
-
-  // Gets all the sync data from the SyncableService for a sync type as a map
-  // from extension id to its sync data.
-  std::map<std::string, SettingSyncDataList> GetAllSyncData(
-      syncer::ModelType model_type) {
-    syncer::SyncDataList as_list =
-        GetSyncableService(model_type)->GetAllSyncData(model_type);
-    std::map<std::string, SettingSyncDataList> as_map;
-    for (syncer::SyncDataList::iterator it = as_list.begin();
-        it != as_list.end(); ++it) {
-      SettingSyncData sync_data(*it);
-      as_map[sync_data.extension_id()].push_back(sync_data);
-    }
-    return as_map;
-  }
-
-  // Need these so that the DCHECKs for running on FILE or UI threads pass.
-  MessageLoop message_loop_;
-  content::TestBrowserThread ui_thread_;
-  content::TestBrowserThread file_thread_;
-
-  base::ScopedTempDir temp_dir_;
-  scoped_ptr<util::MockProfile> profile_;
-  scoped_ptr<SettingsFrontend> frontend_;
-  scoped_refptr<util::ScopedSettingsStorageFactory> storage_factory_;
-  scoped_ptr<MockSyncChangeProcessor> sync_processor_;
-  scoped_ptr<SyncChangeProcessorDelegate> sync_processor_delegate_;
-};
-
-// Get a semblance of coverage for both EXTENSION_SETTINGS and APP_SETTINGS
-// sync by roughly alternative which one to test.
-
-TEST_F(ExtensionSettingsSyncTest, NoDataDoesNotInvokeSync) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  EXPECT_EQ(0u, GetAllSyncData(model_type).size());
-
-  // Have one extension created before sync is set up, the other created after.
-  AddExtensionAndGetStorage("s1", type);
-  EXPECT_EQ(0u, GetAllSyncData(model_type).size());
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  AddExtensionAndGetStorage("s2", type);
-  EXPECT_EQ(0u, GetAllSyncData(model_type).size());
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-  EXPECT_EQ(0u, GetAllSyncData(model_type).size());
-}
-
-TEST_F(ExtensionSettingsSyncTest, InSyncDataDoesNotInvokeSync) {
-  syncer::ModelType model_type = syncer::APP_SETTINGS;
-  Extension::Type type = Extension::TYPE_LEGACY_PACKAGED_APP;
-
-  StringValue value1("fooValue");
-  ListValue value2;
-  value2.Append(StringValue::CreateStringValue("barValue"));
-
-  ValueStore* storage1 = AddExtensionAndGetStorage("s1", type);
-  ValueStore* storage2 = AddExtensionAndGetStorage("s2", type);
-
-  storage1->Set(DEFAULTS, "foo", value1);
-  storage2->Set(DEFAULTS, "bar", value2);
-
-  std::map<std::string, SettingSyncDataList> all_sync_data =
-      GetAllSyncData(model_type);
-  EXPECT_EQ(2u, all_sync_data.size());
-  EXPECT_EQ(1u, all_sync_data["s1"].size());
-  EXPECT_PRED_FORMAT2(ValuesEq, &value1, &all_sync_data["s1"][0].value());
-  EXPECT_EQ(1u, all_sync_data["s2"].size());
-  EXPECT_PRED_FORMAT2(ValuesEq, &value2, &all_sync_data["s2"][0].value());
-
-  syncer::SyncDataList sync_data;
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s1", "foo", value1, model_type));
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s2", "bar", value2, model_type));
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type, sync_data,
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  // Already in sync, so no changes.
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  // Regression test: not-changing the synced value shouldn't result in a sync
-  // change, and changing the synced value should result in an update.
-  storage1->Set(DEFAULTS, "foo", value1);
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  storage1->Set(DEFAULTS, "foo", value2);
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-  SettingSyncData change = sync_processor_->GetOnlyChange("s1", "foo");
-  EXPECT_EQ(syncer::SyncChange::ACTION_UPDATE, change.change_type());
-  EXPECT_TRUE(value2.Equals(&change.value()));
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-}
-
-TEST_F(ExtensionSettingsSyncTest, LocalDataWithNoSyncDataIsPushedToSync) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  StringValue value1("fooValue");
-  ListValue value2;
-  value2.Append(StringValue::CreateStringValue("barValue"));
-
-  ValueStore* storage1 = AddExtensionAndGetStorage("s1", type);
-  ValueStore* storage2 = AddExtensionAndGetStorage("s2", type);
-
-  storage1->Set(DEFAULTS, "foo", value1);
-  storage2->Set(DEFAULTS, "bar", value2);
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  // All settings should have been pushed to sync.
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-  SettingSyncData change = sync_processor_->GetOnlyChange("s1", "foo");
-  EXPECT_EQ(syncer::SyncChange::ACTION_ADD, change.change_type());
-  EXPECT_TRUE(value1.Equals(&change.value()));
-  change = sync_processor_->GetOnlyChange("s2", "bar");
-  EXPECT_EQ(syncer::SyncChange::ACTION_ADD, change.change_type());
-  EXPECT_TRUE(value2.Equals(&change.value()));
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-}
-
-TEST_F(ExtensionSettingsSyncTest, AnySyncDataOverwritesLocalData) {
-  syncer::ModelType model_type = syncer::APP_SETTINGS;
-  Extension::Type type = Extension::TYPE_LEGACY_PACKAGED_APP;
-
-  StringValue value1("fooValue");
-  ListValue value2;
-  value2.Append(StringValue::CreateStringValue("barValue"));
-
-  // Maintain dictionaries mirrored to the expected values of the settings in
-  // each storage area.
-  DictionaryValue expected1, expected2;
-
-  // Pre-populate one of the storage areas.
-  ValueStore* storage1 = AddExtensionAndGetStorage("s1", type);
-  storage1->Set(DEFAULTS, "overwriteMe", value1);
-
-  syncer::SyncDataList sync_data;
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s1", "foo", value1, model_type));
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s2", "bar", value2, model_type));
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type, sync_data,
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-  expected1.Set("foo", value1.DeepCopy());
-  expected2.Set("bar", value2.DeepCopy());
-
-  ValueStore* storage2 = AddExtensionAndGetStorage("s2", type);
-
-  // All changes should be local, so no sync changes.
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  // Sync settings should have been pushed to local settings.
-  EXPECT_PRED_FORMAT2(SettingsEq, expected1, storage1->Get());
-  EXPECT_PRED_FORMAT2(SettingsEq, expected2, storage2->Get());
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-}
-
-TEST_F(ExtensionSettingsSyncTest, ProcessSyncChanges) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  StringValue value1("fooValue");
-  ListValue value2;
-  value2.Append(StringValue::CreateStringValue("barValue"));
-
-  // Maintain dictionaries mirrored to the expected values of the settings in
-  // each storage area.
-  DictionaryValue expected1, expected2;
-
-  // Make storage1 initialised from local data, storage2 initialised from sync.
-  ValueStore* storage1 = AddExtensionAndGetStorage("s1", type);
-  ValueStore* storage2 = AddExtensionAndGetStorage("s2", type);
-
-  storage1->Set(DEFAULTS, "foo", value1);
-  expected1.Set("foo", value1.DeepCopy());
-
-  syncer::SyncDataList sync_data;
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s2", "bar", value2, model_type));
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type, sync_data,
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-  expected2.Set("bar", value2.DeepCopy());
-
-  // Make sync add some settings.
-  syncer::SyncChangeList change_list;
-  change_list.push_back(settings_sync_util::CreateAdd(
-      "s1", "bar", value2, model_type));
-  change_list.push_back(settings_sync_util::CreateAdd(
-      "s2", "foo", value1, model_type));
-  GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  expected1.Set("bar", value2.DeepCopy());
-  expected2.Set("foo", value1.DeepCopy());
-
-  EXPECT_PRED_FORMAT2(SettingsEq, expected1, storage1->Get());
-  EXPECT_PRED_FORMAT2(SettingsEq, expected2, storage2->Get());
-
-  // Make sync update some settings, storage1 the new setting, storage2 the
-  // initial setting.
-  change_list.clear();
-  change_list.push_back(settings_sync_util::CreateUpdate(
-      "s1", "bar", value2, model_type));
-  change_list.push_back(settings_sync_util::CreateUpdate(
-      "s2", "bar", value1, model_type));
-  GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  expected1.Set("bar", value2.DeepCopy());
-  expected2.Set("bar", value1.DeepCopy());
-
-  EXPECT_PRED_FORMAT2(SettingsEq, expected1, storage1->Get());
-  EXPECT_PRED_FORMAT2(SettingsEq, expected2, storage2->Get());
-
-  // Make sync remove some settings, storage1 the initial setting, storage2 the
-  // new setting.
-  change_list.clear();
-  change_list.push_back(settings_sync_util::CreateDelete(
-      "s1", "foo", model_type));
-  change_list.push_back(settings_sync_util::CreateDelete(
-      "s2", "foo", model_type));
-  GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  expected1.Remove("foo", NULL);
-  expected2.Remove("foo", NULL);
-
-  EXPECT_PRED_FORMAT2(SettingsEq, expected1, storage1->Get());
-  EXPECT_PRED_FORMAT2(SettingsEq, expected2, storage2->Get());
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-}
-
-TEST_F(ExtensionSettingsSyncTest, PushToSync) {
-  syncer::ModelType model_type = syncer::APP_SETTINGS;
-  Extension::Type type = Extension::TYPE_LEGACY_PACKAGED_APP;
-
-  StringValue value1("fooValue");
-  ListValue value2;
-  value2.Append(StringValue::CreateStringValue("barValue"));
-
-  // Make storage1/2 initialised from local data, storage3/4 initialised from
-  // sync.
-  ValueStore* storage1 = AddExtensionAndGetStorage("s1", type);
-  ValueStore* storage2 = AddExtensionAndGetStorage("s2", type);
-  ValueStore* storage3 = AddExtensionAndGetStorage("s3", type);
-  ValueStore* storage4 = AddExtensionAndGetStorage("s4", type);
-
-  storage1->Set(DEFAULTS, "foo", value1);
-  storage2->Set(DEFAULTS, "foo", value1);
-
-  syncer::SyncDataList sync_data;
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s3", "bar", value2, model_type));
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s4", "bar", value2, model_type));
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type, sync_data,
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  // Add something locally.
-  storage1->Set(DEFAULTS, "bar", value2);
-  storage2->Set(DEFAULTS, "bar", value2);
-  storage3->Set(DEFAULTS, "foo", value1);
-  storage4->Set(DEFAULTS, "foo", value1);
-
-  SettingSyncData change = sync_processor_->GetOnlyChange("s1", "bar");
-    EXPECT_EQ(syncer::SyncChange::ACTION_ADD, change.change_type());
-    EXPECT_TRUE(value2.Equals(&change.value()));
-  sync_processor_->GetOnlyChange("s2", "bar");
-    EXPECT_EQ(syncer::SyncChange::ACTION_ADD, change.change_type());
-    EXPECT_TRUE(value2.Equals(&change.value()));
-  change = sync_processor_->GetOnlyChange("s3", "foo");
-    EXPECT_EQ(syncer::SyncChange::ACTION_ADD, change.change_type());
-    EXPECT_TRUE(value1.Equals(&change.value()));
-  change = sync_processor_->GetOnlyChange("s4", "foo");
-    EXPECT_EQ(syncer::SyncChange::ACTION_ADD, change.change_type());
-    EXPECT_TRUE(value1.Equals(&change.value()));
-
-  // Change something locally, storage1/3 the new setting and storage2/4 the
-  // initial setting, for all combinations of local vs sync intialisation and
-  // new vs initial.
-  sync_processor_->ClearChanges();
-  storage1->Set(DEFAULTS, "bar", value1);
-  storage2->Set(DEFAULTS, "foo", value2);
-  storage3->Set(DEFAULTS, "bar", value1);
-  storage4->Set(DEFAULTS, "foo", value2);
-
-  change = sync_processor_->GetOnlyChange("s1", "bar");
-    EXPECT_EQ(syncer::SyncChange::ACTION_UPDATE, change.change_type());
-    EXPECT_TRUE(value1.Equals(&change.value()));
-  change = sync_processor_->GetOnlyChange("s2", "foo");
-    EXPECT_EQ(syncer::SyncChange::ACTION_UPDATE, change.change_type());
-    EXPECT_TRUE(value2.Equals(&change.value()));
-  change = sync_processor_->GetOnlyChange("s3", "bar");
-    EXPECT_EQ(syncer::SyncChange::ACTION_UPDATE, change.change_type());
-    EXPECT_TRUE(value1.Equals(&change.value()));
-  change = sync_processor_->GetOnlyChange("s4", "foo");
-    EXPECT_EQ(syncer::SyncChange::ACTION_UPDATE, change.change_type());
-    EXPECT_TRUE(value2.Equals(&change.value()));
-
-  // Remove something locally, storage1/3 the new setting and storage2/4 the
-  // initial setting, for all combinations of local vs sync intialisation and
-  // new vs initial.
-  sync_processor_->ClearChanges();
-  storage1->Remove("foo");
-  storage2->Remove("bar");
-  storage3->Remove("foo");
-  storage4->Remove("bar");
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s1", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s2", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s3", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s4", "bar").change_type());
-
-  // Remove some nonexistent settings.
-  sync_processor_->ClearChanges();
-  storage1->Remove("foo");
-  storage2->Remove("bar");
-  storage3->Remove("foo");
-  storage4->Remove("bar");
-
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  // Clear the rest of the settings.  Add the removed ones back first so that
-  // more than one setting is cleared.
-  storage1->Set(DEFAULTS, "foo", value1);
-  storage2->Set(DEFAULTS, "bar", value2);
-  storage3->Set(DEFAULTS, "foo", value1);
-  storage4->Set(DEFAULTS, "bar", value2);
-
-  sync_processor_->ClearChanges();
-  storage1->Clear();
-  storage2->Clear();
-  storage3->Clear();
-  storage4->Clear();
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s1", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s1", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s2", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s2", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s3", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s3", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s4", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_DELETE,
-      sync_processor_->GetOnlyChange("s4", "bar").change_type());
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-}
-
-TEST_F(ExtensionSettingsSyncTest, ExtensionAndAppSettingsSyncSeparately) {
-  StringValue value1("fooValue");
-  ListValue value2;
-  value2.Append(StringValue::CreateStringValue("barValue"));
-
-  // storage1 is an extension, storage2 is an app.
-  ValueStore* storage1 = AddExtensionAndGetStorage(
-      "s1", Extension::TYPE_EXTENSION);
-  ValueStore* storage2 = AddExtensionAndGetStorage(
-      "s2", Extension::TYPE_LEGACY_PACKAGED_APP);
-
-  storage1->Set(DEFAULTS, "foo", value1);
-  storage2->Set(DEFAULTS, "bar", value2);
-
-  std::map<std::string, SettingSyncDataList> extension_sync_data =
-      GetAllSyncData(syncer::EXTENSION_SETTINGS);
-  EXPECT_EQ(1u, extension_sync_data.size());
-  EXPECT_EQ(1u, extension_sync_data["s1"].size());
-  EXPECT_PRED_FORMAT2(ValuesEq, &value1, &extension_sync_data["s1"][0].value());
-
-  std::map<std::string, SettingSyncDataList> app_sync_data =
-      GetAllSyncData(syncer::APP_SETTINGS);
-  EXPECT_EQ(1u, app_sync_data.size());
-  EXPECT_EQ(1u, app_sync_data["s2"].size());
-  EXPECT_PRED_FORMAT2(ValuesEq, &value2, &app_sync_data["s2"][0].value());
-
-  // Stop each separately, there should be no changes either time.
-  syncer::SyncDataList sync_data;
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s1", "foo", value1, syncer::EXTENSION_SETTINGS));
-
-  GetSyncableService(syncer::EXTENSION_SETTINGS)->MergeDataAndStartSyncing(
-      syncer::EXTENSION_SETTINGS,
-      sync_data,
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-  GetSyncableService(syncer::EXTENSION_SETTINGS)->
-      StopSyncing(syncer::EXTENSION_SETTINGS);
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  sync_data.clear();
-  sync_data.push_back(settings_sync_util::CreateData(
-      "s2", "bar", value2, syncer::APP_SETTINGS));
-
-  scoped_ptr<SyncChangeProcessorDelegate> app_settings_delegate_(
-      new SyncChangeProcessorDelegate(sync_processor_.get()));
-  GetSyncableService(syncer::APP_SETTINGS)->MergeDataAndStartSyncing(
-      syncer::APP_SETTINGS,
-      sync_data,
-      app_settings_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-  GetSyncableService(syncer::APP_SETTINGS)->
-      StopSyncing(syncer::APP_SETTINGS);
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-}
-
-TEST_F(ExtensionSettingsSyncTest, FailingStartSyncingDisablesSync) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  StringValue fooValue("fooValue");
-  StringValue barValue("barValue");
-
-  // There is a bit of a convoluted method to get storage areas that can fail;
-  // hand out TestingValueStore object then toggle them failing/succeeding
-  // as necessary.
-  TestingValueStoreFactory* testing_factory = new TestingValueStoreFactory();
-  storage_factory_->Reset(testing_factory);
-
-  ValueStore* good = AddExtensionAndGetStorage("good", type);
-  ValueStore* bad = AddExtensionAndGetStorage("bad", type);
-
-  // Make bad fail for incoming sync changes.
-  testing_factory->GetExisting("bad")->SetFailAllRequests(true);
-  {
-    syncer::SyncDataList sync_data;
-    sync_data.push_back(settings_sync_util::CreateData(
-          "good", "foo", fooValue, model_type));
-    sync_data.push_back(settings_sync_util::CreateData(
-          "bad", "foo", fooValue, model_type));
-    GetSyncableService(model_type)->MergeDataAndStartSyncing(
-        model_type,
-        sync_data,
-        sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-        scoped_ptr<syncer::SyncErrorFactory>(
-            new syncer::SyncErrorFactoryMock()));
-  }
-  testing_factory->GetExisting("bad")->SetFailAllRequests(false);
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Changes made to good should be sent to sync, changes from bad shouldn't.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "bar", barValue);
-  bad->Set(DEFAULTS, "bar", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Changes received from sync should go to good but not bad (even when it's
-  // not failing).
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "good", "foo", barValue, model_type));
-    // (Sending UPDATE here even though it's adding, since that's what the state
-    // of sync is.  In any case, it won't work.)
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "bad", "foo", barValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Changes made to bad still shouldn't go to sync, even though it didn't fail
-  // last time.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "bar", fooValue);
-  bad->Set(DEFAULTS, "bar", fooValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    dict.Set("bar", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("bar", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Failing ProcessSyncChanges shouldn't go to the storage.
-  testing_factory->GetExisting("bad")->SetFailAllRequests(true);
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "good", "foo", fooValue, model_type));
-    // (Ditto.)
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "bad", "foo", fooValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-  testing_factory->GetExisting("bad")->SetFailAllRequests(false);
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    dict.Set("bar", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("bar", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Restarting sync should make bad start syncing again.
-  sync_processor_->ClearChanges();
-  GetSyncableService(model_type)->StopSyncing(model_type);
-  sync_processor_delegate_.reset(new SyncChangeProcessorDelegate(
-      sync_processor_.get()));
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  // Local settings will have been pushed to sync, since it's empty (in this
-  // test; presumably it wouldn't be live, since we've been getting changes).
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "bar").change_type());
-  EXPECT_EQ(3u, sync_processor_->changes().size());
-
-  // Live local changes now get pushed, too.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "bar", barValue);
-  bad->Set(DEFAULTS, "bar", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("bad", "bar").change_type());
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-
-  // And ProcessSyncChanges work, too.
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "good", "bar", fooValue, model_type));
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "bad", "bar", fooValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    dict.Set("bar", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("bar", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-}
-
-TEST_F(ExtensionSettingsSyncTest, FailingProcessChangesDisablesSync) {
-  // The test above tests a failing ProcessSyncChanges too, but here test with
-  // an initially passing MergeDataAndStartSyncing.
-  syncer::ModelType model_type = syncer::APP_SETTINGS;
-  Extension::Type type = Extension::TYPE_LEGACY_PACKAGED_APP;
-
-  StringValue fooValue("fooValue");
-  StringValue barValue("barValue");
-
-  TestingValueStoreFactory* testing_factory = new TestingValueStoreFactory();
-  storage_factory_->Reset(testing_factory);
-
-  ValueStore* good = AddExtensionAndGetStorage("good", type);
-  ValueStore* bad = AddExtensionAndGetStorage("bad", type);
-
-  // Unlike before, initially succeeding MergeDataAndStartSyncing.
-  {
-    syncer::SyncDataList sync_data;
-    sync_data.push_back(settings_sync_util::CreateData(
-          "good", "foo", fooValue, model_type));
-    sync_data.push_back(settings_sync_util::CreateData(
-          "bad", "foo", fooValue, model_type));
-    GetSyncableService(model_type)->MergeDataAndStartSyncing(
-        model_type,
-        sync_data,
-        sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-        scoped_ptr<syncer::SyncErrorFactory>(
-            new syncer::SyncErrorFactoryMock()));
-  }
-
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Now fail ProcessSyncChanges for bad.
-  testing_factory->GetExisting("bad")->SetFailAllRequests(true);
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "good", "bar", barValue, model_type));
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "bad", "bar", barValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-  testing_factory->GetExisting("bad")->SetFailAllRequests(false);
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // No more changes sent to sync for bad.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "foo", barValue);
-  bad->Set(DEFAULTS, "foo", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  // No more changes received from sync should go to bad.
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "good", "foo", fooValue, model_type));
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "bad", "foo", fooValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-}
-
-TEST_F(ExtensionSettingsSyncTest, FailingGetAllSyncDataDoesntStopSync) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  StringValue fooValue("fooValue");
-  StringValue barValue("barValue");
-
-  TestingValueStoreFactory* testing_factory = new TestingValueStoreFactory();
-  storage_factory_->Reset(testing_factory);
-
-  ValueStore* good = AddExtensionAndGetStorage("good", type);
-  ValueStore* bad = AddExtensionAndGetStorage("bad", type);
-
-  good->Set(DEFAULTS, "foo", fooValue);
-  bad->Set(DEFAULTS, "foo", fooValue);
-
-  // Even though bad will fail to get all sync data, sync data should still
-  // include that from good.
-  testing_factory->GetExisting("bad")->SetFailAllRequests(true);
-  {
-    syncer::SyncDataList all_sync_data =
-        GetSyncableService(model_type)->GetAllSyncData(model_type);
-    EXPECT_EQ(1u, all_sync_data.size());
-    EXPECT_EQ("good/foo", all_sync_data[0].GetTag());
-  }
-  testing_factory->GetExisting("bad")->SetFailAllRequests(false);
-
-  // Sync shouldn't be disabled for good (nor bad -- but this is unimportant).
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "foo").change_type());
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "bar", barValue);
-  bad->Set(DEFAULTS, "bar", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "bar").change_type());
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-}
-
-TEST_F(ExtensionSettingsSyncTest, FailureToReadChangesToPushDisablesSync) {
-  syncer::ModelType model_type = syncer::APP_SETTINGS;
-  Extension::Type type = Extension::TYPE_LEGACY_PACKAGED_APP;
-
-  StringValue fooValue("fooValue");
-  StringValue barValue("barValue");
-
-  TestingValueStoreFactory* testing_factory = new TestingValueStoreFactory();
-  storage_factory_->Reset(testing_factory);
-
-  ValueStore* good = AddExtensionAndGetStorage("good", type);
-  ValueStore* bad = AddExtensionAndGetStorage("bad", type);
-
-  good->Set(DEFAULTS, "foo", fooValue);
-  bad->Set(DEFAULTS, "foo", fooValue);
-
-  // good will successfully push foo:fooValue to sync, but bad will fail to
-  // get them so won't.
-  testing_factory->GetExisting("bad")->SetFailAllRequests(true);
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-  testing_factory->GetExisting("bad")->SetFailAllRequests(false);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  // bad should now be disabled for sync.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "bar", barValue);
-  bad->Set(DEFAULTS, "bar", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateUpdate(
-          "good", "foo", barValue, model_type));
-    // (Sending ADD here even though it's updating, since that's what the state
-    // of sync is.  In any case, it won't work.)
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "bad", "foo", barValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("foo", fooValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Re-enabling sync without failing should cause the local changes from bad
-  // to be pushed to sync successfully, as should future changes to bad.
-  sync_processor_->ClearChanges();
-  GetSyncableService(model_type)->StopSyncing(model_type);
-  sync_processor_delegate_.reset(new SyncChangeProcessorDelegate(
-      sync_processor_.get()));
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "bar").change_type());
-  EXPECT_EQ(4u, sync_processor_->changes().size());
-
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "bar", fooValue);
-  bad->Set(DEFAULTS, "bar", fooValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-}
-
-TEST_F(ExtensionSettingsSyncTest, FailureToPushLocalStateDisablesSync) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  StringValue fooValue("fooValue");
-  StringValue barValue("barValue");
-
-  TestingValueStoreFactory* testing_factory = new TestingValueStoreFactory();
-  storage_factory_->Reset(testing_factory);
-
-  ValueStore* good = AddExtensionAndGetStorage("good", type);
-  ValueStore* bad = AddExtensionAndGetStorage("bad", type);
-
-  // Only set bad; setting good will cause it to fail below.
-  bad->Set(DEFAULTS, "foo", fooValue);
-
-  sync_processor_->SetFailAllRequests(true);
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-  sync_processor_->SetFailAllRequests(false);
-
-  // Changes from good will be send to sync, changes from bad won't.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "foo", barValue);
-  bad->Set(DEFAULTS, "foo", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  // Changes from sync will be sent to good, not to bad.
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "good", "bar", barValue, model_type));
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "bad", "bar", barValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Restarting sync makes everything work again.
-  sync_processor_->ClearChanges();
-  GetSyncableService(model_type)->StopSyncing(model_type);
-  sync_processor_delegate_.reset(new SyncChangeProcessorDelegate(
-      sync_processor_.get()));
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "foo").change_type());
-  EXPECT_EQ(3u, sync_processor_->changes().size());
-
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "foo", fooValue);
-  bad->Set(DEFAULTS, "foo", fooValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-}
-
-TEST_F(ExtensionSettingsSyncTest, FailureToPushLocalChangeDisablesSync) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  StringValue fooValue("fooValue");
-  StringValue barValue("barValue");
-
-  TestingValueStoreFactory* testing_factory = new TestingValueStoreFactory();
-  storage_factory_->Reset(testing_factory);
-
-  ValueStore* good = AddExtensionAndGetStorage("good", type);
-  ValueStore* bad = AddExtensionAndGetStorage("bad", type);
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  // bad will fail to send changes.
-  good->Set(DEFAULTS, "foo", fooValue);
-  sync_processor_->SetFailAllRequests(true);
-  bad->Set(DEFAULTS, "foo", fooValue);
-  sync_processor_->SetFailAllRequests(false);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  // No further changes should be sent from bad.
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "foo", barValue);
-  bad->Set(DEFAULTS, "foo", barValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(1u, sync_processor_->changes().size());
-
-  // Changes from sync will be sent to good, not to bad.
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "good", "bar", barValue, model_type));
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "bad", "bar", barValue, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    dict.Set("bar", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, good->Get());
-  }
-  {
-    DictionaryValue dict;
-    dict.Set("foo", barValue.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, dict, bad->Get());
-  }
-
-  // Restarting sync makes everything work again.
-  sync_processor_->ClearChanges();
-  GetSyncableService(model_type)->StopSyncing(model_type);
-  sync_processor_delegate_.reset(new SyncChangeProcessorDelegate(
-      sync_processor_.get()));
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("good", "bar").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_ADD,
-      sync_processor_->GetOnlyChange("bad", "foo").change_type());
-  EXPECT_EQ(3u, sync_processor_->changes().size());
-
-  sync_processor_->ClearChanges();
-  good->Set(DEFAULTS, "foo", fooValue);
-  bad->Set(DEFAULTS, "foo", fooValue);
-
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(
-      syncer::SyncChange::ACTION_UPDATE,
-      sync_processor_->GetOnlyChange("good", "foo").change_type());
-  EXPECT_EQ(2u, sync_processor_->changes().size());
-}
-
-TEST_F(ExtensionSettingsSyncTest,
-       LargeOutgoingChangeRejectedButIncomingAccepted) {
-  syncer::ModelType model_type = syncer::APP_SETTINGS;
-  Extension::Type type = Extension::TYPE_LEGACY_PACKAGED_APP;
-
-  // This value should be larger than the limit in settings_backend.cc.
-  std::string string_5k;
-  for (size_t i = 0; i < 5000; ++i) {
-    string_5k.append("a");
-  }
-  StringValue large_value(string_5k);
-
-  GetSyncableService(model_type)->MergeDataAndStartSyncing(
-      model_type,
-      syncer::SyncDataList(),
-      sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-      scoped_ptr<syncer::SyncErrorFactory>(new syncer::SyncErrorFactoryMock()));
-
-  // Large local change rejected and doesn't get sent out.
-  ValueStore* storage1 = AddExtensionAndGetStorage("s1", type);
-  EXPECT_TRUE(storage1->Set(DEFAULTS, "large_value", large_value)->HasError());
-  EXPECT_EQ(0u, sync_processor_->changes().size());
-
-  // Large incoming change should still get accepted.
-  ValueStore* storage2 = AddExtensionAndGetStorage("s2", type);
-  {
-    syncer::SyncChangeList change_list;
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "s1", "large_value", large_value, model_type));
-    change_list.push_back(settings_sync_util::CreateAdd(
-          "s2", "large_value", large_value, model_type));
-    GetSyncableService(model_type)->ProcessSyncChanges(FROM_HERE, change_list);
-  }
-  {
-    DictionaryValue expected;
-    expected.Set("large_value", large_value.DeepCopy());
-    EXPECT_PRED_FORMAT2(SettingsEq, expected, storage1->Get());
-    EXPECT_PRED_FORMAT2(SettingsEq, expected, storage2->Get());
-  }
-
-  GetSyncableService(model_type)->StopSyncing(model_type);
-}
-
-TEST_F(ExtensionSettingsSyncTest, Dots) {
-  syncer::ModelType model_type = syncer::EXTENSION_SETTINGS;
-  Extension::Type type = Extension::TYPE_EXTENSION;
-
-  ValueStore* storage = AddExtensionAndGetStorage("ext", type);
-
-  {
-    syncer::SyncDataList sync_data_list;
-    scoped_ptr<Value> string_value(Value::CreateStringValue("value"));
-    sync_data_list.push_back(settings_sync_util::CreateData(
-        "ext", "key.with.dot", *string_value, model_type));
-
-    GetSyncableService(model_type)->MergeDataAndStartSyncing(
-        model_type,
-        sync_data_list,
-        sync_processor_delegate_.PassAs<syncer::SyncChangeProcessor>(),
-        scoped_ptr<syncer::SyncErrorFactory>(
-            new syncer::SyncErrorFactoryMock()));
-  }
-
-  // Test dots in keys that come from sync.
-  {
-    ValueStore::ReadResult data = storage->Get();
-    ASSERT_FALSE(data->HasError());
-
-    DictionaryValue expected_data;
-    expected_data.SetWithoutPathExpansion(
-        "key.with.dot",
-        Value::CreateStringValue("value"));
-    EXPECT_TRUE(Value::Equals(&expected_data, data->settings().get()));
-  }
-
-  // Test dots in keys going to sync.
-  {
-    scoped_ptr<Value> string_value(Value::CreateStringValue("spot"));
-    storage->Set(DEFAULTS, "key.with.spot", *string_value);
-
-    ASSERT_EQ(1u, sync_processor_->changes().size());
-    SettingSyncData sync_data = sync_processor_->changes()[0];
-    EXPECT_EQ(syncer::SyncChange::ACTION_ADD, sync_data.change_type());
-    EXPECT_EQ("ext", sync_data.extension_id());
-    EXPECT_EQ("key.with.spot", sync_data.key());
-    EXPECT_TRUE(sync_data.value().Equals(string_value.get()));
-  }
-}
-
-}  // namespace extensions