Move views::Accelerator to ui in order to use it from aura code.

views/controls/message_box_view.h

 // Copyright (c) 2011 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 VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
 #define VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_
 #pragma once
 
 #include <string>
 
@@ skipping 47 matching lines @@
 
   // View:
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
 
  protected:
   // View:
   virtual void ViewHierarchyChanged(bool is_add,
                                     views::View* parent,
                                     views::View* child) OVERRIDE;
   // Handles Ctrl-C and writes the message in the system clipboard.
-  virtual bool AcceleratorPressed(
-      const views::Accelerator& accelerator) OVERRIDE;
+  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 
  private:
   // Sets up the layout manager and initializes the prompt field. This should
   // only be called once, from the constructor.
   void Init(int dialog_flags, const string16& default_prompt);
 
   // Sets up the layout manager based on currently initialized views. Should be
   // called when a view is initialized or changed.
   void ResetLayoutManager();
 
@@ skipping 11 matching lines @@
 
   // Maximum width of the message label.
   int message_width_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBoxView);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_MESSAGE_BOX_VIEW_H_