Update Cdm Wrapper and ClearKeyCdm to work with CDM interface version 4.

webkit/media/crypto/ppapi/fake_cdm_video_decoder.h

 // 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.
 
 #ifndef WEBKIT_MEDIA_CRYPTO_PPAPI_FAKE_CDM_VIDEO_DECODER_H_
 #define WEBKIT_MEDIA_CRYPTO_PPAPI_FAKE_CDM_VIDEO_DECODER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "webkit/media/crypto/ppapi/cdm/content_decryption_module.h"
@@ skipping 13 matching lines @@
   virtual cdm::Status DecodeFrame(const uint8_t* compressed_frame,
                                   int32_t compressed_frame_size,
                                   int64_t timestamp,
                                   cdm::VideoFrame* decoded_frame) OVERRIDE;
   virtual bool is_initialized() const OVERRIDE { return is_initialized_; }
 
  private:
   bool is_initialized_;
   cdm::Size video_size_;
 
-  cdm::Allocator* const allocator_;
+  cdm::Host* const host_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeCdmVideoDecoder);
 };
 
 }  // namespace webkit_media
 
 #endif  // WEBKIT_MEDIA_CRYPTO_PPAPI_FAKE_CDM_VIDEO_DECODER_H_