Conditionally build support for Pepper-based CDMs.

third_party/widevine/cdm/widevine_cdm.gyp

 # 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': {
     'widevine_cdm_version_h_file%': 'widevine_cdm_version.h',
     'widevine_cdm_binary_files%': [],
     'conditions': [
       [ 'branding == "Chrome"', {
@@ skipping 31 matching lines @@
       }],
     ],
   },
   # Always provide a target, so we can put the logic about whether there's
   # anything to be done in this file (instead of a higher-level .gyp file).
   'targets': [
     {
       'target_name': 'widevinecdmadapter',
       'type': 'none',
       'conditions': [
-        [ 'branding == "Chrome" and OS != "android" and OS != "ios"', {
+        [ 'branding == "Chrome" and enable_pepper_cdms==1', {
           'dependencies': [
             '<(DEPTH)/ppapi/ppapi.gyp:ppapi_cpp',
             'widevine_cdm_version_h',
             'widevine_cdm_binaries',
           ],
           'sources': [
             '<(DEPTH)/webkit/media/crypto/ppapi/cdm_wrapper.cc',
             '<(DEPTH)/webkit/media/crypto/ppapi/cdm/content_decryption_module.h',
             '<(DEPTH)/webkit/media/crypto/ppapi/linked_ptr.h',
           ],
@@ skipping 54 matching lines @@
       'type': 'none',
       'copies': [{
         # TODO(ddorwin): Do we need a sub-directory? We either need a
         # sub-directory or to rename manifest.json before we can copy it.
         'destination': '<(PRODUCT_DIR)',
         'files': [ '<@(widevine_cdm_binary_files)' ],
       }],
     },
   ],
 }