Add content decryptor related structs and update PP{P|B}_ContentDecryptor_Private.

ppapi/api/private/ppp_content_decryptor_private.idl

 /* 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.
  */
 
 /**
  * This file defines the <code>PPP_ContentDecryptor_Private</code>
  * interface. Note: This is a special interface, only to be used for Content
  * Decryption Modules, not normal plugins.
  */
@@ skipping 67 matching lines @@
   /**
    * Decrypts the block and returns the unencrypted block via
    * <code>DeliverBlock()</code> on the
    * <code>PPB_ContentDecryptor_Private</code> interface. The returned block
    * contains encoded data.
    *
    * @param[in] resource A <code>PP_Resource</code> corresponding to a
    * <code>PPB_Buffer_Dev</code> resource that contains an encrypted data
    * block.
    *
-   * @param[in] request_id A value used by the browser to associate data
-   * returned via the <code>PPB_ContentDecryptor_Private</code> interface with
-   * decryption method calls.
+   * @param[in] encrypted_block_info A <code>PP_EncryptedBlockInfo</code> that
+   * contains all auxiliary information needed for decryption of the
+   * <code>encrypted_block</code>.
    */
   PP_Bool Decrypt(
       [in] PP_Instance instance,
       [in] PP_Resource encrypted_block,
-      [in] int32_t request_id);
+      [in] PP_EncryptedBlockInfo encrypted_block_info);
 
   /**
    * Decrypts the block, decodes it, and returns the unencrypted uncompressed
    * (decoded) media to the browser via the
    * <code>PPB_ContentDecryptor_Private</code> interface.
    *
    * Decrypted and decoded video frames are sent to <code>DeliverFrame()</code>,
    * and decrypted and decoded audio samples are sent to
    * <code>DeliverSamples()</code>.
    *
    * @param[in] resource A <code>PP_Resource</code> corresponding to a
    * <code>PPB_Buffer_Dev</code> resource that contains an encrypted data
    * block.
    *
-   * @param[in] request_id A value used by the browser to associate data
-   * returned via the <code>PPB_ContentDecryptor_Private</code> interface with
-   * decryption method calls.
+   * @param[in] encrypted_block_info A <code>PP_EncryptedBlockInfo</code> that
+   * contains all auxiliary information needed for decryption of the
+   * <code>encrypted_block</code>.
    */
   PP_Bool DecryptAndDecode(
       [in] PP_Instance instance,
       [in] PP_Resource encrypted_block,
-      [in] int32_t request_id);
+      [in] PP_EncryptedBlockInfo encrypted_block_info);
 };