Remove the checksum/HMAC code from the decryptor.

webkit/media/crypto/ppapi/clear_key_cdm.cc

 // 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.
 
 #include "webkit/media/crypto/ppapi/clear_key_cdm.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 13 matching lines @@
     subsample.clear_bytes = input_buffer.subsamples[i].clear_bytes;
     subsample.cypher_bytes = input_buffer.subsamples[i].cipher_bytes;
     subsamples.push_back(subsample);
   }
 
   scoped_ptr<media::DecryptConfig> decrypt_config(new media::DecryptConfig(
       std::string(reinterpret_cast<const char*>(input_buffer.key_id),
                   input_buffer.key_id_size),
       std::string(reinterpret_cast<const char*>(input_buffer.iv),
                   input_buffer.iv_size),
-      std::string(reinterpret_cast<const char*>(input_buffer.checksum),
-                  input_buffer.checksum_size),
       input_buffer.data_offset,
       subsamples));
 
   output_buffer->SetDecryptConfig(decrypt_config.Pass());
   output_buffer->SetTimestamp(
       base::TimeDelta::FromMicroseconds(input_buffer.timestamp));
 
   return output_buffer;
 }
 
@@ skipping 185 matching lines @@
 
 void ClearKeyCdm::ResetVideoDecoder() {
   NOTIMPLEMENTED();
 }
 
 void ClearKeyCdm::StopVideoDecoder() {
   NOTIMPLEMENTED();
 }
 
 }  // namespace webkit_media