AcceleratorProvider: Make GetAcceleratorForCommandId const.

ash/shell_unittest.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 "ash/shell.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/common/ash_switches.h"
@@ skipping 98 matching lines @@
 class SimpleMenuDelegate : public ui::SimpleMenuModel::Delegate {
  public:
   SimpleMenuDelegate() {}
   ~SimpleMenuDelegate() override {}
 
   bool IsCommandIdChecked(int command_id) const override { return false; }
 
   bool IsCommandIdEnabled(int command_id) const override { return true; }
 
   bool GetAcceleratorForCommandId(int command_id,
-                                  ui::Accelerator* accelerator) override {
+                                  ui::Accelerator* accelerator) const override {
     return false;
   }
 
   void ExecuteCommand(int command_id, int event_flags) override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SimpleMenuDelegate);
 };
 
 }  // namespace
@@ skipping 378 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellTest2);
 };
 
 TEST_F(ShellTest2, DontCrashWhenWindowDeleted) {
   window_.reset(new aura::Window(NULL));
   window_->Init(ui::LAYER_NOT_DRAWN);
 }
 
 }  // namespace ash