Remove checksum in CDM interface and implementations.

ppapi/c/private/pp_content_decryptor.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.
  */
 
-/* From private/pp_content_decryptor.idl modified Fri Aug 24 16:06:47 2012. */
+/* From private/pp_content_decryptor.idl modified Mon Sep 17 09:50:39 2012. */
 
 #ifndef PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_
 #define PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_
 
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_stdint.h"
 
 /**
  * @file
  * The <code>PP_DecryptTrackingInfo</code> struct contains necessary information
@@ skipping 90 matching lines @@
    * <code>PP_EncryptedBlockInfo</code> as a <code>PP_Resource</code>.
    */
   uint8_t key_id[64];
   uint32_t key_id_size;
   /**
    * Initialization vector of the block to be decrypted.
    */
   uint8_t iv[16];
   uint32_t iv_size;
   /**
-   * Checksum of the block to be decrypted.
-   */
-  uint8_t checksum[12];
-  uint32_t checksum_size;
-  /**
    * Subsample information of the block to be decrypted.
    */
   struct PP_DecryptSubsampleDescription subsamples[16];
   uint32_t num_subsamples;
 };
-PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_EncryptedBlockInfo, 256);
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_EncryptedBlockInfo, 240);
 /**
  * @}
  */
 
 /**
  * @addtogroup Enums
  * @{
  */
 /**
  * The <code>PP_DecryptResult</code> enum contains decryption and decoding
@@ skipping 37 matching lines @@
    */
   uint32_t padding;
 };
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_DecryptedBlockInfo, 24);
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_ */