aura: Remove client::UserActionClient.

ash/shell_delegate.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 ASH_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
 #include "ash/shell.h"
 #include "base/callback.h"
 #include "base/strings/string16.h"
 
 namespace app_list {
 class AppListViewDelegate;
 }
 
 namespace aura {
 class RootWindow;
 class Window;
-namespace client {
-class UserActionClient;
-}
 }
 
 namespace content {
 class BrowserContext;
 }
 
 namespace ui {
 class MenuModel;
 }
 
@@ skipping 81 matching lines @@
 
   // Creates a accessibility delegate. Shell takes ownership of the delegate.
   virtual AccessibilityDelegate* CreateAccessibilityDelegate() = 0;
 
   // Creates an application delegate. Shell takes ownership of the delegate.
   virtual NewWindowDelegate* CreateNewWindowDelegate() = 0;
 
   // Creates a media delegate. Shell takes ownership of the delegate.
   virtual MediaDelegate* CreateMediaDelegate() = 0;
 
-  // Creates a user action client. Shell takes ownership of the object.
-  virtual aura::client::UserActionClient* CreateUserActionClient() = 0;
-
   // Creates a menu model of the context for the |root_window|.
   // When a ContextMenu is used for an item created by ShelfWindowWatcher,
   // passes its ShelfItemDelegate and ShelfItem.
   virtual ui::MenuModel* CreateContextMenu(
       aura::Window* root_window,
       ash::ShelfItemDelegate* item_delegate,
       ash::ShelfItem* item) = 0;
 
   // Creates a root window host factory. Shell takes ownership of the returned
   // value.
   virtual WindowTreeHostFactory* CreateWindowTreeHostFactory() = 0;
 
   // Creates a GPU support object. Shell takes ownership of the object.
   virtual GPUSupport* CreateGPUSupport() = 0;
 
   // Get the product name.
   virtual base::string16 GetProductName() const = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_