AcceleratorProvider: Make GetAcceleratorForCommandId const.

chrome/test/base/menu_model_test.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 "chrome/test/base/menu_model_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 
 bool MenuModelTest::Delegate::IsCommandIdChecked(int command_id) const {
   return false;
 }
 
 bool MenuModelTest::Delegate::IsCommandIdEnabled(int command_id) const {
   ++enable_count_;
   return true;
 }
 
 bool MenuModelTest::Delegate::GetAcceleratorForCommandId(
     int command_id,
-    ui::Accelerator* accelerator) {
+    ui::Accelerator* accelerator) const {
   return false;
 }
 
 void MenuModelTest::Delegate::ExecuteCommand(int command_id, int event_flags) {
   ++execute_count_;
 }
 
 // Recursively checks the enabled state and executes a command on every item
 // that's not a separator or a submenu parent item. The returned count should
 // match the number of times the delegate is called to ensure every item works.
@@ skipping 12 matching lines @@
       case ui::MenuModel::TYPE_RADIO:
         model->IsEnabledAt(i);  // Check if it's enabled (ignore answer).
         model->ActivatedAt(i);  // Execute it.
         (*count)++;  // Increment the count of executable items seen.
         break;
       default:
         FAIL();  // Ensure every case is tested.
     }
   }
 }