Add Pepper support for several GL extensions

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 169 matching lines @@
         '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_net_connector_api.h',
         'thunk/ppb_flash_net_connector_thunk.cc',
         'thunk/ppb_font_api.h',
         'thunk/ppb_font_thunk.cc',
         'thunk/ppb_fullscreen_thunk.cc',
         '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_image_data_api.h',
         'thunk/ppb_image_data_thunk.cc',
         'thunk/ppb_image_data_trusted_thunk.cc',
         'thunk/ppb_instance_api.h',
         'thunk/ppb_instance_thunk.cc',
@@ skipping 33 matching lines @@
         'thunk/ppb_websocket_api.h',
         'thunk/ppb_websocket_thunk.cc',
         'thunk/ppb_widget_api.h',
         'thunk/ppb_widget_thunk.cc',
         'thunk/ppb_zoom_thunk.cc',
         'thunk/thunk.h',
       ],
     },
   ],
 }