Remove --show-app-list-shortcut flag and implement new app launcher enable logic.

chrome/browser/shell_integration.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 CHROME_BROWSER_SHELL_INTEGRATION_H_
 #define CHROME_BROWSER_SHELL_INTEGRATION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 93 matching lines @@
     gfx::ImageFamily favicon;
     base::FilePath profile_path;
   };
 
   // Info about which locations to create app shortcuts in.
   struct ShortcutLocations {
     ShortcutLocations();
 
     bool on_desktop;
     bool in_applications_menu;
+    string16 applications_menu_subdir;
 
     // For Windows, this refers to quick launch bar prior to Win7. In Win7,
     // this means "pin to taskbar". For Mac/Linux, this could be used for
     // Mac dock or the gnome/kde application launcher. However, those are not
     // implemented yet.
     bool in_quick_launch_bar;
 
     // For Linux, this refers to a shortcut which the system knows about (for
     // the purpose of identifying windows and giving them the correct
     // title/icon), but which does not show up in menus or search results.
@@ skipping 205 matching lines @@
     // Set Chrome as the default handler for this protocol.
     virtual bool SetAsDefault(bool interactive_permitted) OVERRIDE;
 
     std::string protocol_;
 
     DISALLOW_COPY_AND_ASSIGN(DefaultProtocolClientWorker);
   };
 };
 
 #endif  // CHROME_BROWSER_SHELL_INTEGRATION_H_