Cleanup mojo Wallpaper interfaces for mash.

ash/common/wm_shell.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 ASH_COMMON_WM_SHELL_H_
 #define ASH_COMMON_WM_SHELL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 16 matching lines @@
 namespace display {
 class Display;
 class ManagedDisplayInfo;
 }
 
 namespace gfx {
 class Insets;
 class Point;
 }
 
-namespace shell {
-class Connector;
-}
-
 namespace views {
 class PointerWatcher;
 enum class PointerWatcherEventTypes;
 }
 
 namespace ash {
 
 class AcceleratorController;
 class AccessibilityDelegate;
 class BrightnessControlDelegate;
@@ skipping 448 matching lines @@
   scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
 
 #if defined(OS_CHROMEOS)
   std::unique_ptr<LogoutConfirmationController> logout_confirmation_controller_;
 #endif
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_SHELL_H_