ppapi: Support up to 32 subsamples in PP_EncryptedBlockInfo.

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 Wed Sep 16 16:45:25 2015. */
+/* From private/pp_content_decryptor.idl modified Mon Oct 19 13:00:24 2015. */
 
 #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 96 matching lines @@
    */
   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;
   /**
    * Subsample information of the block to be decrypted.
+   *
+   * TODO(xhwang): We need to have a fixed size of |subsamples| here. Choose 32
+   * because it is sufficient for almost all real life scenarios. Note that in
+   * theory the number of subsamples could be larger than 32. If that happens,
+   * playback will fail.
    */
-  struct PP_DecryptSubsampleDescription subsamples[16];
+  struct PP_DecryptSubsampleDescription subsamples[32];
   uint32_t num_subsamples;
 };
-PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_EncryptedBlockInfo, 240);
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_EncryptedBlockInfo, 368);
 /**
  * @}
  */
 
 /**
  * @addtogroup Enums
  * @{
  */
 /**
  * <code>PP_DecryptedFrameFormat</code> contains video frame formats.
@@ skipping 396 matching lines @@
    */
   uint32_t system_code;
 };
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_KeyInformation, 524);
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PRIVATE_PP_CONTENT_DECRYPTOR_H_ */