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

views/controls/message_box_view.cc

 // 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.
 
 #include "views/controls/message_box_view.h"
 
 #include "base/i18n/rtl.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/accessibility/accessible_view_state.h"
@@ skipping 84 matching lines @@
                                           View* child) {
   if (child == this && is_add) {
     if (prompt_field_)
       prompt_field_->SelectAll();
 
     GetWidget()->NotifyAccessibilityEvent(
         this, ui::AccessibilityTypes::EVENT_ALERT, true);
   }
 }
 
-bool MessageBoxView::AcceleratorPressed(
-    const Accelerator& accelerator) {
+bool MessageBoxView::AcceleratorPressed(const ui::Accelerator& accelerator) {
   // We only accepts Ctrl-C.
   DCHECK(accelerator.key_code() == 'C' && accelerator.IsCtrlDown());
 
   // We must not intercept Ctrl-C when we have a text box and it's focused.
   if (prompt_field_ && prompt_field_->HasFocus())
     return false;
 
   if (!ViewsDelegate::views_delegate)
     return false;
 
@@ skipping 102 matching lines @@
   if (checkbox_) {
     layout->AddPaddingRow(0, kRelatedControlVerticalSpacing);
     layout->StartRow(0, checkbox_column_view_set_id);
     layout->AddView(checkbox_);
   }
 
   layout->AddPaddingRow(0, kRelatedControlVerticalSpacing);
 }
 
 }  // namespace views