AcceleratorProvider: Make GetAcceleratorForCommandId const.

chrome/browser/apps/app_browsertest.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 <stddef.h>
 
 #include <memory>
 
 #include "apps/launcher.h"
 #include "base/bind.h"
@@ skipping 72 matching lines @@
 
   bool HasCommandWithId(int command_id) {
     return menu_model_.GetIndexOfCommandId(command_id) != -1;
   }
 
   void Show() override {}
 
  protected:
   // RenderViewContextMenu implementation.
   bool GetAcceleratorForCommandId(int command_id,
-                                  ui::Accelerator* accelerator) override {
+                                  ui::Accelerator* accelerator) const override {
     return false;
   }
 };
 
 // This class keeps track of tabs as they are added to the browser. It will be
 // "done" (i.e. won't block on Wait()) once |observations| tabs have been added.
 class TabsAddedNotificationObserver
     : public content::WindowedNotificationObserver {
  public:
   explicit TabsAddedNotificationObserver(size_t observations)
@@ skipping 1285 matching lines @@
 // https://crbug.com/620194.
 #define MAYBE_AppWindowIframe DISABLED_AppWindowIframe
 // Sends chrome.test.sendMessage from chrome.app.window.create's callback.
 // The app window also adds an <iframe> to the page during window.onload.
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, MAYBE_AppWindowIframe) {
   LoadAndLaunchPlatformApp("app_window_send_message",
                            "APP_WINDOW_CREATE_CALLBACK");
 }
 
 }  // namespace extensions