[DRAFT] Add new default stylesheet for platform apps.

chrome/chrome_renderer.gypi

 # Copyright (c) 2011 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': 'renderer',
       'type': 'static_library',
       'dependencies': [
@@ skipping 65 matching lines @@
         'renderer/extensions/extension_dispatcher.h',
         'renderer/extensions/extension_groups.h',
         'renderer/extensions/extension_helper.cc',
         'renderer/extensions/extension_helper.h',
         'renderer/extensions/extension_process_bindings.cc',
         'renderer/extensions/extension_process_bindings.h',
         'renderer/extensions/extension_resource_request_policy.cc',
         'renderer/extensions/extension_resource_request_policy.h',
         'renderer/extensions/file_browser_private_bindings.cc',
         'renderer/extensions/file_browser_private_bindings.h',
+        'renderer/extensions/platform_app_dispatcher.cc',
+        'renderer/extensions/platform_app_dispatcher.h',
         'renderer/extensions/renderer_extension_bindings.cc',
         'renderer/extensions/renderer_extension_bindings.h',
         'renderer/extensions/user_script_idle_scheduler.cc',
         'renderer/extensions/user_script_idle_scheduler.h',
         'renderer/extensions/user_script_slave.cc',
         'renderer/extensions/user_script_slave.h',
         'renderer/frame_sniffer.cc',
         'renderer/frame_sniffer.h',
         'renderer/loadtimes_extension_bindings.h',
         'renderer/loadtimes_extension_bindings.cc',
@@ skipping 141 matching lines @@
               'export_dependent_settings': [
                 '<(allocator_target)',
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }