Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

chrome/chrome_browser_ui.gypi

 # Copyright 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_ui',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 279 matching lines @@
         'browser/ui/cocoa/about_ipc_controller.h',
         'browser/ui/cocoa/about_ipc_controller.mm',
         'browser/ui/cocoa/about_ipc_dialog.h',
         'browser/ui/cocoa/about_ipc_dialog.mm',
         'browser/ui/cocoa/accelerators_cocoa.h',
         'browser/ui/cocoa/accelerators_cocoa.mm',
         'browser/ui/cocoa/animatable_image.h',
         'browser/ui/cocoa/animatable_image.mm',
         'browser/ui/cocoa/animatable_view.h',
         'browser/ui/cocoa/animatable_view.mm',
+        'browser/ui/cocoa/app_list/app_list_controller_cocoa.mm',
         'browser/ui/cocoa/applescript/apple_event_util.h',
         'browser/ui/cocoa/applescript/apple_event_util.mm',
         'browser/ui/cocoa/applescript/bookmark_folder_applescript.h',
         'browser/ui/cocoa/applescript/bookmark_folder_applescript.mm',
         'browser/ui/cocoa/applescript/bookmark_item_applescript.h',
         'browser/ui/cocoa/applescript/bookmark_item_applescript.mm',
         'browser/ui/cocoa/applescript/bookmark_node_applescript.h',
         'browser/ui/cocoa/applescript/bookmark_node_applescript.mm',
         'browser/ui/cocoa/applescript/browsercrapplication+applescript.h',
         'browser/ui/cocoa/applescript/browsercrapplication+applescript.mm',
@@ skipping 2497 matching lines @@
         }],
         ['enable_message_center==1', {
           'dependencies': [
             '../ui/message_center/message_center.gyp:message_center',
           ],
         }],
       ],
     },
   ],
 }