Update CDM interface and add clear key CDM.

webkit/media/webkit_media.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.
 
 {
   'targets': [
     {
       'target_name': 'webkit_media',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 60 matching lines @@
           'dependencies': [
             '<(DEPTH)/media/media.gyp:player_android',
           ],
         }, { # OS != "android"'
           'sources/': [
             ['exclude', '^android/'],
           ],
         }],
       ],
     },
+    {
+      'target_name': 'clearkeycdm',
+      'type': 'shared_library',
+      'dependencies': [
+        '<(DEPTH)/base/base.gyp:base',
+        '<(DEPTH)/media/media.gyp:media'
+      ],
+      'sources': [
+        'crypto/clear_key_cdm.cc',
+        'crypto/clear_key_cdm.h',
+      ],
+    }
   ],
 }