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

chrome/browser/ui/avatar_button_error_controller.h

 // Copyright 2016 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_AVATAR_BUTTON_ERROR_CONTROLLER_H_
 #define CHROME_BROWSER_UI_AVATAR_BUTTON_ERROR_CONTROLLER_H_
 
 #include "chrome/browser/ui/avatar_button_error_controller_delegate.h"
 #include "components/signin/core/browser/signin_error_controller.h"
 #include "components/sync/driver/sync_error_controller.h"
@@ skipping 30 matching lines @@
 
    private:
     Profile* profile_;
     AvatarButtonErrorController* avatar_button_error_controller_;
 
     DISALLOW_COPY_AND_ASSIGN(SigninErrorObserver);
   };
 
   // Observes sync errors and updates the error controller for the avatar
   // button accordingly.
-  class SyncErrorObserver : public SyncErrorController::Observer {
+  class SyncErrorObserver : public syncer::SyncErrorController::Observer {
    public:
     SyncErrorObserver(
         Profile* profile,
         AvatarButtonErrorController* avatar_button_error_controller);
     ~SyncErrorObserver() override;
 
     // SyncErrorController::Observer:
     void OnErrorChanged() override;
 
     bool HasSyncError();
 
    private:
-    SyncErrorController* GetSyncErrorControllerIfNeeded();
+    syncer::SyncErrorController* GetSyncErrorControllerIfNeeded();
 
     Profile* profile_;
     AvatarButtonErrorController* avatar_button_error_controller_;
 
     DISALLOW_COPY_AND_ASSIGN(SyncErrorObserver);
   };
 
   void UpdateSigninError(bool has_signin_error);
   void UpdateSyncError(bool has_sync_error);
 
   AvatarButtonErrorControllerDelegate* delegate_;
 
   SigninErrorObserver avatar_signin_error_controller_;
   SyncErrorObserver avatar_sync_error_controller_;
 
   bool has_signin_error_;
   bool has_sync_error_;
 
   DISALLOW_COPY_AND_ASSIGN(AvatarButtonErrorController);
 };
 
 #endif  // CHROME_BROWSER_UI_AVATAR_BUTTON_ERROR_CONTROLLER_H_