Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

components/sync/driver/generic_change_processor.h

 // Copyright 2014 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.
 
 #ifndef COMPONENTS_SYNC_DRIVER_GENERIC_CHANGE_PROCESSOR_H_
 #define COMPONENTS_SYNC_DRIVER_GENERIC_CHANGE_PROCESSOR_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "components/sync/api/attachments/attachment_store.h"
 #include "components/sync/api/data_type_error_handler.h"
 #include "components/sync/api/sync_change_processor.h"
 #include "components/sync/api/sync_merge_result.h"
 #include "components/sync/core/attachments/attachment_service.h"
 #include "components/sync/core/attachments/attachment_service_proxy.h"
 #include "components/sync/driver/change_processor.h"
 
 namespace syncer {
-
-class SyncApiComponentFactory;
-class SyncClient;
 class SyncData;
 class SyncableService;
 class WriteNode;
 class WriteTransaction;
 
+typedef std::vector<syncer::SyncData> SyncDataList;
+
 namespace syncable {
 class Entry;
 }  // namespace syncable
+}  // namespace syncer
 
-typedef std::vector<SyncData> SyncDataList;
+namespace sync_driver {
+
+class SyncApiComponentFactory;
+class SyncClient;
 
 // Datatype agnostic change processor. One instance of GenericChangeProcessor
 // is created for each datatype and lives on the datatype's thread. It then
 // handles all interaction with the sync api, both translating pushes from the
 // local service into transactions and receiving changes from the sync model,
 // which then get converted into SyncChange's and sent to the local service.
 //
 // As a rule, the GenericChangeProcessor is not thread safe, and should only
 // be used on the same thread in which it was created.
 class GenericChangeProcessor : public ChangeProcessor,
-                               public SyncChangeProcessor,
-                               public AttachmentService::Delegate,
+                               public syncer::SyncChangeProcessor,
+                               public syncer::AttachmentService::Delegate,
                                public base::NonThreadSafe {
  public:
   // Create a change processor for |type| and connect it to the syncer.
   // |attachment_store| can be NULL which means that datatype will not use sync
   // attachments.
   GenericChangeProcessor(
-      ModelType type,
-      std::unique_ptr<DataTypeErrorHandler> error_handler,
-      const base::WeakPtr<SyncableService>& local_service,
-      const base::WeakPtr<SyncMergeResult>& merge_result,
-      UserShare* user_share,
+      syncer::ModelType type,
+      std::unique_ptr<syncer::DataTypeErrorHandler> error_handler,
+      const base::WeakPtr<syncer::SyncableService>& local_service,
+      const base::WeakPtr<syncer::SyncMergeResult>& merge_result,
+      syncer::UserShare* user_share,
       SyncClient* sync_client,
-      std::unique_ptr<AttachmentStoreForSync> attachment_store);
+      std::unique_ptr<syncer::AttachmentStoreForSync> attachment_store);
   ~GenericChangeProcessor() override;
 
   // ChangeProcessor interface.
   // Build and store a list of all changes into |syncer_changes_|.
   void ApplyChangesFromSyncModel(
-      const BaseTransaction* trans,
+      const syncer::BaseTransaction* trans,
       int64_t version,
-      const ImmutableChangeRecordList& changes) override;
+      const syncer::ImmutableChangeRecordList& changes) override;
   // Passes |syncer_changes_|, built in ApplyChangesFromSyncModel, onto
   // |local_service_| by way of its ProcessSyncChanges method.
   void CommitChangesFromSyncModel() override;
 
-  // SyncChangeProcessor implementation.
-  SyncError ProcessSyncChanges(const tracked_objects::Location& from_here,
-                               const SyncChangeList& change_list) override;
-  SyncDataList GetAllSyncData(ModelType type) const override;
-  SyncError UpdateDataTypeContext(
-      ModelType type,
-      SyncChangeProcessor::ContextRefreshStatus refresh_status,
+  // syncer::SyncChangeProcessor implementation.
+  syncer::SyncError ProcessSyncChanges(
+      const tracked_objects::Location& from_here,
+      const syncer::SyncChangeList& change_list) override;
+  syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const override;
+  syncer::SyncError UpdateDataTypeContext(
+      syncer::ModelType type,
+      syncer::SyncChangeProcessor::ContextRefreshStatus refresh_status,
       const std::string& context) override;
-  void AddLocalChangeObserver(LocalChangeObserver* observer) override;
-  void RemoveLocalChangeObserver(LocalChangeObserver* observer) override;
+  void AddLocalChangeObserver(syncer::LocalChangeObserver* observer) override;
+  void RemoveLocalChangeObserver(
+      syncer::LocalChangeObserver* observer) override;
 
-  // AttachmentService::Delegate implementation.
-  void OnAttachmentUploaded(const AttachmentId& attachment_id) override;
+  // syncer::AttachmentService::Delegate implementation.
+  void OnAttachmentUploaded(const syncer::AttachmentId& attachment_id) override;
 
   // Similar to above, but returns a SyncError for use by direct clients
   // of GenericChangeProcessor that may need more error visibility.
-  virtual SyncError GetAllSyncDataReturnError(SyncDataList* data) const;
+  virtual syncer::SyncError GetAllSyncDataReturnError(
+      syncer::SyncDataList* data) const;
 
   // If a datatype context associated with this GenericChangeProcessor's type
   // exists, fills |context| and returns true. Otheriwse, if there has not been
   // a context set, returns false.
   virtual bool GetDataTypeContext(std::string* context) const;
 
   // Returns the number of items for this type.
   virtual int GetSyncCount();
 
   // Generic versions of AssociatorInterface methods. Called by
-  // SyncableServiceAdapter or the DataTypeController.
+  // syncer::SyncableServiceAdapter or the DataTypeController.
   virtual bool SyncModelHasUserCreatedNodes(bool* has_nodes);
   virtual bool CryptoReadyIfNecessary();
 
   // Gets AttachmentService proxy for datatype.
-  std::unique_ptr<AttachmentService> GetAttachmentService() const;
+  std::unique_ptr<syncer::AttachmentService> GetAttachmentService() const;
 
  protected:
   // ChangeProcessor interface.
   void StartImpl() override;  // Does nothing.
-  UserShare* share_handle() const override;
+  syncer::UserShare* share_handle() const override;
 
  private:
-  SyncError AttemptDelete(const SyncChange& change,
-                          ModelType type,
-                          const std::string& type_str,
-                          WriteNode* node,
-                          DataTypeErrorHandler* error_handler);
+  syncer::SyncError AttemptDelete(const syncer::SyncChange& change,
+                                  syncer::ModelType type,
+                                  const std::string& type_str,
+                                  syncer::WriteNode* node,
+                                  syncer::DataTypeErrorHandler* error_handler);
   // Logically part of ProcessSyncChanges.
   //
   // |new_attachments| is an output parameter containing newly added attachments
   // that need to be stored.  This method will append to it.
-  SyncError HandleActionAdd(const SyncChange& change,
-                            const std::string& type_str,
-                            const WriteTransaction& trans,
-                            WriteNode* sync_node,
-                            AttachmentIdSet* new_attachments);
+  syncer::SyncError HandleActionAdd(const syncer::SyncChange& change,
+                                    const std::string& type_str,
+                                    const syncer::WriteTransaction& trans,
+                                    syncer::WriteNode* sync_node,
+                                    syncer::AttachmentIdSet* new_attachments);
 
   // Logically part of ProcessSyncChanges.
   //
   // |new_attachments| is an output parameter containing newly added attachments
   // that need to be stored.  This method will append to it.
-  SyncError HandleActionUpdate(const SyncChange& change,
-                               const std::string& type_str,
-                               const WriteTransaction& trans,
-                               WriteNode* sync_node,
-                               AttachmentIdSet* new_attachments);
+  syncer::SyncError HandleActionUpdate(
+      const syncer::SyncChange& change,
+      const std::string& type_str,
+      const syncer::WriteTransaction& trans,
+      syncer::WriteNode* sync_node,
+      syncer::AttachmentIdSet* new_attachments);
 
   // Begin uploading attachments that have not yet been uploaded to the sync
   // server.
   void UploadAllAttachmentsNotOnServer();
 
   // Notify every registered local change observer that |change| is about to be
   // applied to |current_entry|.
-  void NotifyLocalChangeObservers(const syncable::Entry* current_entry,
-                                  const SyncChange& change);
+  void NotifyLocalChangeObservers(const syncer::syncable::Entry* current_entry,
+                                  const syncer::SyncChange& change);
 
-  const ModelType type_;
+  const syncer::ModelType type_;
 
   // The SyncableService this change processor will forward changes on to.
-  const base::WeakPtr<SyncableService> local_service_;
+  const base::WeakPtr<syncer::SyncableService> local_service_;
 
   // A SyncMergeResult used to track the changes made during association. The
   // owner will invalidate the weak pointer when association is complete. While
   // the pointer is valid though, we increment it with any changes received
   // via ProcessSyncChanges.
-  const base::WeakPtr<SyncMergeResult> merge_result_;
+  const base::WeakPtr<syncer::SyncMergeResult> merge_result_;
 
   // The current list of changes received from the syncer. We buffer because
   // we must ensure no syncapi transaction is held when we pass it on to
   // |local_service_|.
   // Set in ApplyChangesFromSyncModel, consumed in CommitChangesFromSyncModel.
-  SyncChangeList syncer_changes_;
+  syncer::SyncChangeList syncer_changes_;
 
   // Our handle to the sync model. Unlike normal ChangeProcessors, we need to
   // be able to access the sync model before the change processor begins
   // listening to changes (the local_service_ will be interacting with us
   // when it starts up). As such we can't wait until Start(_) has been called,
   // and have to keep a local pointer to the user_share.
-  UserShare* const share_handle_;
+  syncer::UserShare* const share_handle_;
 
   // AttachmentService for datatype. Can be NULL if datatype doesn't use
   // attachments.
-  std::unique_ptr<AttachmentService> attachment_service_;
+  std::unique_ptr<syncer::AttachmentService> attachment_service_;
 
   // List of observers that want to be notified of local changes being written.
-  base::ObserverList<LocalChangeObserver> local_change_observers_;
+  base::ObserverList<syncer::LocalChangeObserver> local_change_observers_;
 
   // Must be destroyed before attachment_service_ to ensure WeakPtrs are
   // invalidated before attachment_service_ is destroyed.
   // Can be NULL if attachment_service_ is NULL;
-  std::unique_ptr<base::WeakPtrFactory<AttachmentService>>
+  std::unique_ptr<base::WeakPtrFactory<syncer::AttachmentService>>
       attachment_service_weak_ptr_factory_;
-  AttachmentServiceProxy attachment_service_proxy_;
+  syncer::AttachmentServiceProxy attachment_service_proxy_;
   base::WeakPtrFactory<GenericChangeProcessor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GenericChangeProcessor);
 };
 
-}  // namespace syncer
+}  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_GENERIC_CHANGE_PROCESSOR_H_