AcceleratorProvider: Make GetAcceleratorForCommandId const.

chrome/browser/extensions/extension_context_menu_model.cc

 // Copyright (c) 2012 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/extensions/extension_context_menu_model.h"
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/extensions/context_menu_matcher.h"
@@ skipping 210 matching lines @@
     case PAGE_ACCESS_RUN_ON_SITE:
     case PAGE_ACCESS_RUN_ON_ALL_SITES:
       return true;
     default:
       NOTREACHED() << "Unknown command" << command_id;
   }
   return true;
 }
 
 bool ExtensionContextMenuModel::GetAcceleratorForCommandId(
-    int command_id, ui::Accelerator* accelerator) {
+    int command_id,
+    ui::Accelerator* accelerator) const {
   return false;
 }
 
 void ExtensionContextMenuModel::ExecuteCommand(int command_id,
                                                int event_flags) {
   const Extension* extension = GetExtension();
   if (!extension)
     return;
 
   if (command_id >= IDC_EXTENSIONS_CONTEXT_CUSTOM_FIRST &&
@@ skipping 218 matching lines @@
     if (runner && runner->WantsToRun(extension))
       runner->RunBlockedActions(extension);
   }
 }
 
 content::WebContents* ExtensionContextMenuModel::GetActiveWebContents() const {
   return browser_->tab_strip_model()->GetActiveWebContents();
 }
 
 }  // namespace extensions