Add a skeleton gamepad resource.

ppapi/ppapi_shared.gypi

 # 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.
 
 {
   'variables': {
     'conditions': [
       ['inside_chromium_build==0', {
         'webkit_src_dir': '../../../..',
       },{
@@ skipping 152 matching lines @@
           'thunk/ppb_flash_device_id_thunk.cc',
           'thunk/ppb_flash_file_fileref_thunk.cc',
           'thunk/ppb_flash_file_modulelocal_thunk.cc',
           'thunk/ppb_flash_fullscreen_thunk.cc',
           'thunk/ppb_flash_menu_api.h',
           'thunk/ppb_flash_menu_thunk.cc',
           'thunk/ppb_flash_message_loop_api.h',
           'thunk/ppb_flash_message_loop_thunk.cc',
           'thunk/ppb_flash_thunk.cc',
           'thunk/ppb_fullscreen_thunk.cc',
+          'thunk/ppb_gamepad_api.h',
           'thunk/ppb_gamepad_thunk.cc',
           'thunk/ppb_gles_chromium_texture_mapping_thunk.cc',
           'thunk/ppb_graphics_2d_api.h',
           'thunk/ppb_graphics_2d_thunk.cc',
           'thunk/ppb_graphics_3d_api.h',
           'thunk/ppb_graphics_3d_thunk.cc',
           'thunk/ppb_graphics_3d_trusted_thunk.cc',
           'thunk/ppb_host_resolver_private_api.h',
           'thunk/ppb_host_resolver_private_thunk.cc',
           'thunk/ppb_image_data_api.h',
@@ skipping 114 matching lines @@
               'thunk/ppb_video_layer_thunk.cc',
               'thunk/ppb_websocket_thunk.cc',
               'thunk/ppb_x509_certificate_private_thunk.cc',
             ],
           }],
         ],
       }],
     ],
   },
 }