[Sync] Move //components/sync to the syncer namespace.

components/sync/api/sync_change_processor.h

 // Copyright 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.
 
 #ifndef COMPONENTS_SYNC_API_SYNC_CHANGE_PROCESSOR_H_
 #define COMPONENTS_SYNC_API_SYNC_CHANGE_PROCESSOR_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 55 matching lines @@
   // Update this method to be pure virtual (bug 353300).
   virtual void GetSyncData(const ModelType& type,
                            const std::string& sync_tag,
                            const GetSyncDataCallback& callback) const {}
 
   // Updates the context for |type|, triggering an optional context refresh.
   // Default implementation does nothing. A type's context is a per-client blob
   // that can affect all SyncData sent to/from the server, much like a cookie.
   // TODO(zea): consider pulling the refresh logic into a separate method
   // unrelated to datatype implementations.
-  virtual syncer::SyncError UpdateDataTypeContext(
-      ModelType type,
-      ContextRefreshStatus refresh_status,
-      const std::string& context);
+  virtual SyncError UpdateDataTypeContext(ModelType type,
+                                          ContextRefreshStatus refresh_status,
+                                          const std::string& context);
 
   // Adds an observer of local sync changes. This observer is notified when
   // local sync changes are applied by GenericChangeProcessor. observer is
   // not owned by the SyncChangeProcessor.
   virtual void AddLocalChangeObserver(LocalChangeObserver* observer);
   virtual void RemoveLocalChangeObserver(LocalChangeObserver* observer);
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_SYNC_CHANGE_PROCESSOR_H_