Add CdmWrapper to support multiple CDM versions in CdmAdapter.

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 84 matching lines @@
       'dependencies': [
         '<(DEPTH)/ppapi/ppapi.gyp:ppapi_cpp',
         'clearkeycdm',
       ],
       'sources': [
         'cdm/ppapi/api/content_decryption_module.h',
         'cdm/ppapi/cdm_adapter.cc',
         'cdm/ppapi/cdm_adapter.h',
         'cdm/ppapi/cdm_helpers.cc',
         'cdm/ppapi/cdm_helpers.h',
+        'cdm/ppapi/cdm_wrapper.h',
         'cdm/ppapi/linked_ptr.h',
       ],
       'conditions': [
         ['os_posix == 1 and OS != "mac" and enable_pepper_cdms==1', {
           'cflags': ['-fvisibility=hidden'],
           'type': 'loadable_module',
           # Allow the plugin adapter to find the CDM in the same directory.
           'ldflags': ['-Wl,-rpath=\$$ORIGIN'],
           'libraries': [
             # Built by clearkeycdm.
@@ skipping 15 matching lines @@
               '-Wl,-exported_symbol,_PPP_InitializeModule',
               '-Wl,-exported_symbol,_PPP_ShutdownModule'
             ],
             'DYLIB_INSTALL_NAME_BASE': '@loader_path',
           },
         }],
       ],
     }
   ],
 }