sync: move SharedChangeProcessor to components/

chrome/browser/sync/glue/shared_change_processor.cc

Index: chrome/browser/sync/glue/shared_change_processor.cc
diff --git a/chrome/browser/sync/glue/shared_change_processor.cc b/chrome/browser/sync/glue/shared_change_processor.cc
deleted file mode 100644
index 1a122686cef3c5a082f7165b8354ad2e5d546824..0000000000000000000000000000000000000000
--- a/chrome/browser/sync/glue/shared_change_processor.cc
+++ /dev/null
@@ -1,211 +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 "chrome/browser/sync/glue/shared_change_processor.h"
-
-#include "base/message_loop/message_loop_proxy.h"
-#include "components/sync_driver/generic_change_processor.h"
-#include "components/sync_driver/generic_change_processor_factory.h"
-#include "components/sync_driver/sync_api_component_factory.h"
-#include "sync/api/sync_change.h"
-
-using base::AutoLock;
-
-namespace browser_sync {
-
-SharedChangeProcessor::SharedChangeProcessor()
-    : disconnected_(false),
-      type_(syncer::UNSPECIFIED),
-      frontend_loop_(base::MessageLoopProxy::current()),
-      generic_change_processor_(NULL),
-      error_handler_(NULL) {
-}
-
-SharedChangeProcessor::~SharedChangeProcessor() {
-  // We can either be deleted when the DTC is destroyed (on UI
-  // thread), or when the syncer::SyncableService stop's syncing (datatype
-  // thread).  |generic_change_processor_|, if non-NULL, must be
-  // deleted on |backend_loop_|.
-  if (frontend_loop_->BelongsToCurrentThread()) {
-    if (backend_loop_.get()) {
-      if (!backend_loop_->DeleteSoon(FROM_HERE, generic_change_processor_)) {
-        NOTREACHED();
-      }
-    } else {
-      DCHECK(!generic_change_processor_);
-    }
-  } else {
-    DCHECK(backend_loop_.get());
-    DCHECK(backend_loop_->BelongsToCurrentThread());
-    delete generic_change_processor_;
-  }
-}
-
-base::WeakPtr<syncer::SyncableService> SharedChangeProcessor::Connect(
-    browser_sync::SyncApiComponentFactory* sync_factory,
-    GenericChangeProcessorFactory* processor_factory,
-    syncer::UserShare* user_share,
-    DataTypeErrorHandler* error_handler,
-    syncer::ModelType type,
-    const base::WeakPtr<syncer::SyncMergeResult>& merge_result) {
-  DCHECK(sync_factory);
-  DCHECK(error_handler);
-  DCHECK_NE(type, syncer::UNSPECIFIED);
-  backend_loop_ = base::MessageLoopProxy::current();
-  AutoLock lock(monitor_lock_);
-  if (disconnected_)
-    return base::WeakPtr<syncer::SyncableService>();
-  type_ = type;
-  error_handler_ = error_handler;
-  base::WeakPtr<syncer::SyncableService> local_service =
-      sync_factory->GetSyncableServiceForType(type);
-  if (!local_service.get()) {
-    LOG(WARNING) << "SyncableService destroyed before DTC was stopped.";
-    disconnected_ = true;
-    return base::WeakPtr<syncer::SyncableService>();
-  }
-
-  generic_change_processor_ =
-      processor_factory->CreateGenericChangeProcessor(user_share,
-                                                      error_handler,
-                                                      local_service,
-                                                      merge_result,
-                                                      sync_factory).release();
-  return local_service;
-}
-
-bool SharedChangeProcessor::Disconnect() {
-  // May be called from any thread.
-  DVLOG(1) << "Disconnecting change processor.";
-  AutoLock lock(monitor_lock_);
-  bool was_connected = !disconnected_;
-  disconnected_ = true;
-  error_handler_ = NULL;
-  return was_connected;
-}
-
-ChangeProcessor* SharedChangeProcessor::generic_change_processor() {
-  return generic_change_processor_;
-}
-
-int SharedChangeProcessor::GetSyncCount() {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    LOG(ERROR) << "Change processor disconnected.";
-    return 0;
-  }
-  return generic_change_processor_->GetSyncCountForType(type_);
-}
-
-syncer::SyncError SharedChangeProcessor::ProcessSyncChanges(
-    const tracked_objects::Location& from_here,
-    const syncer::SyncChangeList& list_of_changes) {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    // The DTC that disconnects us must ensure it posts a StopSyncing task.
-    // If we reach this, it means it just hasn't executed yet.
-    syncer::SyncError error(FROM_HERE,
-                            syncer::SyncError::DATATYPE_ERROR,
-                            "Change processor disconnected.",
-                            type_);
-    return error;
-  }
-  return generic_change_processor_->ProcessSyncChanges(
-      from_here, list_of_changes);
-}
-
-syncer::SyncDataList SharedChangeProcessor::GetAllSyncData(
-    syncer::ModelType type) const {
-  syncer::SyncDataList data;
-  GetAllSyncDataReturnError(type, &data);  // Handles the disconnect case.
-  return data;
-}
-
-syncer::SyncError SharedChangeProcessor::GetAllSyncDataReturnError(
-    syncer::ModelType type,
-    syncer::SyncDataList* data) const {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    syncer::SyncError error(FROM_HERE,
-                            syncer::SyncError::DATATYPE_ERROR,
-                            "Change processor disconnected.",
-                            type_);
-    return error;
-  }
-  return generic_change_processor_->GetAllSyncDataReturnError(type, data);
-}
-
-syncer::SyncError SharedChangeProcessor::UpdateDataTypeContext(
-    syncer::ModelType type,
-    syncer::SyncChangeProcessor::ContextRefreshStatus refresh_status,
-    const std::string& context) {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    syncer::SyncError error(FROM_HERE,
-                            syncer::SyncError::DATATYPE_ERROR,
-                            "Change processor disconnected.",
-                            type_);
-    return error;
-  }
-  return generic_change_processor_->UpdateDataTypeContext(
-      type, refresh_status, context);
-}
-
-bool SharedChangeProcessor::SyncModelHasUserCreatedNodes(bool* has_nodes) {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    LOG(ERROR) << "Change processor disconnected.";
-    return false;
-  }
-  return generic_change_processor_->SyncModelHasUserCreatedNodes(
-      type_, has_nodes);
-}
-
-bool SharedChangeProcessor::CryptoReadyIfNecessary() {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    LOG(ERROR) << "Change processor disconnected.";
-    return true;  // Otherwise we get into infinite spin waiting.
-  }
-  return generic_change_processor_->CryptoReadyIfNecessary(type_);
-}
-
-bool SharedChangeProcessor::GetDataTypeContext(std::string* context) const {
-  DCHECK(backend_loop_.get());
-  DCHECK(backend_loop_->BelongsToCurrentThread());
-  AutoLock lock(monitor_lock_);
-  if (disconnected_) {
-    LOG(ERROR) << "Change processor disconnected.";
-    return false;
-  }
-  return generic_change_processor_->GetDataTypeContext(type_, context);
-}
-
-syncer::SyncError SharedChangeProcessor::CreateAndUploadError(
-    const tracked_objects::Location& location,
-    const std::string& message) {
-  AutoLock lock(monitor_lock_);
-  if (!disconnected_) {
-    return error_handler_->CreateAndUploadError(location, message, type_);
-  } else {
-    return syncer::SyncError(location,
-                             syncer::SyncError::DATATYPE_ERROR,
-                             message,
-                             type_);
-  }
-}
-
-}  // namespace browser_sync