[Sync] Fix namespaces for the sync_bookmarks component.

components/sync_bookmarks/bookmark_data_type_controller.h

Index: components/sync_bookmarks/bookmark_data_type_controller.h
diff --git a/components/sync_bookmarks/bookmark_data_type_controller.h b/components/sync_bookmarks/bookmark_data_type_controller.h
index d9b9689bb9c66c19eab1d6a079b43285af12282e..7e4abf7820ebdb1689d0e9b8de6392b39f481b37 100644
--- a/components/sync_bookmarks/bookmark_data_type_controller.h
+++ b/components/sync_bookmarks/bookmark_data_type_controller.h
@@ -14,12 +14,13 @@
 #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,
@@ -27,7 +28,7 @@ class BookmarkDataTypeController : public FrontendDataTypeController,
   ~BookmarkDataTypeController() override;
 
  private:
-  // FrontendDataTypeController:
+  // browser_sync::FrontendDataTypeController:
   bool StartModels() override;
   void CleanUpState() override;
   void CreateSyncComponents() override;
@@ -55,6 +56,6 @@ class BookmarkDataTypeController : public FrontendDataTypeController,
   DISALLOW_COPY_AND_ASSIGN(BookmarkDataTypeController);
 };
 
-}  // namespace browser_sync
+}  // namespace sync_bookmarks
 
 #endif  // COMPONENTS_SYNC_BOOKMARKS_BOOKMARK_DATA_TYPE_CONTROLLER_H__