Adds Ctrl-Shift-Q support inside AppList

ash/shell_delegate.h

 // 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.
 
 #ifndef ASH_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 38 matching lines @@
   // The Shell owns the delegate.
   virtual ~ShellDelegate() {}
 
   // Invoked when the user clicks on button in the launcher to create a new
   // window.
   virtual void CreateNewWindow() = 0;
 
   // Invoked to create a new status area. Can return NULL.
   virtual views::Widget* CreateStatusArea() = 0;
 
+  // Invoked when a user uses Ctrl-Shift-Q to close chrome.
+  virtual void Exit() = 0;
+
   // Invoked to ask the delegate to populate the |model|.
   virtual void BuildAppListModel(AppListModel* model) = 0;
 
   // Invoked to create an AppListViewDelegate. Shell takes the ownership of
   // the created delegate.
   virtual AppListViewDelegate* CreateAppListViewDelegate() = 0;
 
   // Returns a list of windows to cycle with keyboard shortcuts (e.g. alt-tab
   // or the window switching key).  If |order_by_activity| is true then windows
   // are returned in most-recently-used order with the currently active window
@@ skipping 12 matching lines @@
   virtual bool ConfigureLauncherItem(LauncherItem* item) = 0;
 
   // Returns the resource id of the image to show on the browser shortcut
   // button.
   virtual int GetBrowserShortcutResourceId() = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_