Fix official build in GN

media/media_cdm.gypi

 # Copyright 2013 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': [
       ['OS == "android"', {
         # Android doesn't use ffmpeg.
         'use_ffmpeg%': 0,
@@ skipping 80 matching lines @@
             'cdm/ppapi/external_clear_key/cdm_video_decoder.cc',
             'cdm/ppapi/external_clear_key/cdm_video_decoder.h',
             'cdm/ppapi/external_clear_key/clear_key_cdm.cc',
             'cdm/ppapi/external_clear_key/clear_key_cdm.h',
             'cdm/ppapi/external_clear_key/clear_key_cdm_common.h',
           ],
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4267, ],
         },
         {
+          # GN version: //media/cdm/ppapi:clearkeycdmadapter_resources
           'target_name': 'clearkeycdmadapter_resources',
           'type': 'none',
           'conditions': [
             ['branding == "Chrome"', {
               'variables': {
                 'branding_path': '../chrome/app/theme/google_chrome/BRANDING',
               },
             }, { # else branding!="Chrome"
               'variables': {
                 'branding_path': '../chrome/app/theme/chromium/BRANDING',
@@ skipping 38 matching lines @@
                 # Built by clearkeycdm.
                 '<(PRODUCT_DIR)/libclearkeycdm.so',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }