AcceleratorProvider: Make GetAcceleratorForCommandId const.

chrome/browser/ui/views/translate/translate_bubble_view.h

 // Copyright 2013 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_VIEWS_TRANSLATE_TRANSLATE_BUBBLE_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_TRANSLATE_TRANSLATE_BUBBLE_VIEW_H_
 
 #include <map>
 #include <string>
 
@@ skipping 91 matching lines @@
 
   // views::MenuButtonListener method.
   void OnMenuButtonClicked(views::MenuButton* source,
                            const gfx::Point& point,
                            const ui::Event* event) override;
 
   // ui::SimpleMenuModel::Delegate methods.
   bool IsCommandIdChecked(int command_id) const override;
   bool IsCommandIdEnabled(int command_id) const override;
   bool GetAcceleratorForCommandId(int command_id,
-                                  ui::Accelerator* accelerator) override;
+                                  ui::Accelerator* accelerator) const override;
   void ExecuteCommand(int command_id, int event_flags) override;
 
   // views::StyledLabelListener method.
   void StyledLabelLinkClicked(views::StyledLabel* label,
                               const gfx::Range& range,
                               int event_flags) override;
 
   // content::WebContentsObserver method.
   void WebContentsDestroyed() override;
 
@@ skipping 134 matching lines @@
   const bool is_in_incognito_window_;
 
   bool should_always_translate_;
 
   std::unique_ptr<WebContentMouseHandler> mouse_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateBubbleView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TRANSLATE_TRANSLATE_BUBBLE_VIEW_H_