[Sync] Fix namespaces for the browser_sync component.

chrome/browser/ui/webui/sync_internals_message_handler.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 CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_
 
 #include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "base/values.h"
 #include "components/sync/driver/protocol_event_observer.h"
 #include "components/sync/driver/sync_service_observer.h"
 #include "components/sync/engine/cycle/type_debug_info_observer.h"
 #include "components/sync/js/js_controller.h"
 #include "components/sync/js/js_event_handler.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
+class SigninManagerBase;
+
+namespace browser_sync {
 class ProfileSyncService;
-class SigninManagerBase;
+}  // namespace browser_sync
 
 namespace sync_driver {
 class SyncService;
 }  //  namespace sync_driver
 
 // Interface to abstract away the creation of the about-sync value dictionary.
 class AboutSyncDataExtractor {
  public:
   // Given state about sync, extracts various interesting fields and populates
   // a tree of base::Value objects.
@@ skipping 64 matching lines @@
  protected:
   // Constructor used for unit testing to override the about sync info.
   SyncInternalsMessageHandler(
       std::unique_ptr<AboutSyncDataExtractor> about_sync_data_extractor);
 
  private:
   // Fetches updated aboutInfo and sends it to the page in the form of an
   // onAboutInfoUpdated event.
   void SendAboutInfo();
 
-  ProfileSyncService* GetProfileSyncService();
+  browser_sync::ProfileSyncService* GetProfileSyncService();
 
   base::WeakPtr<syncer::JsController> js_controller_;
 
   // A flag used to prevent double-registration with ProfileSyncService.
   bool is_registered_ = false;
 
   // A flag used to prevent double-registration as TypeDebugInfoObserver with
   // ProfileSyncService.
   bool is_registered_for_counters_ = false;
 
   // An abstraction of who creates the about sync info value map.
   std::unique_ptr<AboutSyncDataExtractor> about_sync_data_extractor_;
 
   base::WeakPtrFactory<SyncInternalsMessageHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncInternalsMessageHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_