[Sync] Fix namespaces for the sync_bookmarks component.

components/sync_bookmarks/bookmark_data_type_controller.h

 // 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.
 
 #ifndef COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_DATA_TYPE_CONTROLLER_H__
 #define COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_DATA_TYPE_CONTROLLER_H__
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/scoped_observer.h"
 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
 #include "components/history/core/browser/history_service_observer.h"
 #include "components/sync/driver/frontend_data_type_controller.h"
 
-namespace browser_sync {
+namespace sync_bookmarks {
 
 // A class that manages the startup and shutdown of bookmark sync.
-class BookmarkDataTypeController : public FrontendDataTypeController,
-                                   public bookmarks::BaseBookmarkModelObserver,
-                                   public history::HistoryServiceObserver {
+class BookmarkDataTypeController
+    : public browser_sync::FrontendDataTypeController,
+      public bookmarks::BaseBookmarkModelObserver,
+      public history::HistoryServiceObserver {
  public:
   // |dump_stack| is called when an unrecoverable error occurs.
   BookmarkDataTypeController(const base::Closure& dump_stack,
                              sync_driver::SyncClient* sync_client);
   ~BookmarkDataTypeController() override;
 
  private:
-  // FrontendDataTypeController:
+  // browser_sync::FrontendDataTypeController:
   bool StartModels() override;
   void CleanUpState() override;
   void CreateSyncComponents() override;
 
   // bookmarks::BaseBookmarkModelObserver:
   void BookmarkModelChanged() override;
   void BookmarkModelLoaded(bookmarks::BookmarkModel* model,
                            bool ids_reassigned) override;
   void BookmarkModelBeingDeleted(bookmarks::BookmarkModel* model) override;
 
   // Helper that returns true iff both the bookmark model and the history
   // service have finished loading.
   bool DependentsLoaded();
 
   // history::HistoryServiceObserver:
   void OnHistoryServiceLoaded(history::HistoryService* service) override;
   void HistoryServiceBeingDeleted(
       history::HistoryService* history_service) override;
 
   ScopedObserver<history::HistoryService, history::HistoryServiceObserver>
       history_service_observer_;
   ScopedObserver<bookmarks::BookmarkModel, BaseBookmarkModelObserver>
       bookmark_model_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkDataTypeController);
 };
 
-}  // namespace browser_sync
+}  // namespace sync_bookmarks
 
 #endif  // COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_DATA_TYPE_CONTROLLER_H__