AcceleratorProvider: Make GetAcceleratorForCommandId const.

chrome/browser/status_icons/status_icon_menu_model.cc

 // 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.
 
 #include "chrome/browser/status_icons/status_icon_menu_model.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/gfx/image/image.h"
@@ skipping 95 matching lines @@
 }
 
 bool StatusIconMenuModel::IsCommandIdVisible(int command_id) const {
   ItemStateMap::const_iterator iter = item_states_.find(command_id);
   if (iter != item_states_.end())
     return iter->second.visible;
   return true;
 }
 
 bool StatusIconMenuModel::GetAcceleratorForCommandId(
-    int command_id, ui::Accelerator* accelerator) {
+    int command_id, ui::Accelerator* accelerator) const {
   ItemStateMap::const_iterator iter = item_states_.find(command_id);
   if (iter != item_states_.end() &&
       iter->second.accelerator.key_code() != ui::VKEY_UNKNOWN) {
     *accelerator = iter->second.accelerator;
     return true;
   }
   return false;
 }
 
 bool StatusIconMenuModel::IsItemForCommandIdDynamic(int command_id) const {
@@ skipping 44 matching lines @@
 
 void StatusIconMenuModel::CommandIdHighlighted(int command_id) {
   if (delegate_)
     delegate_->CommandIdHighlighted(command_id);
 }
 
 void StatusIconMenuModel::ExecuteCommand(int command_id, int event_flags) {
   if (delegate_)
     delegate_->ExecuteCommand(command_id, event_flags);
 }