Return void from all PPP CDM API interface methods

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 18 matching lines @@
    * other methods on this interface. The session ID must be provided to the
    * browser by the CDM via <code>KeyMessage()</code> on the
    * <code>PPB_ContentDecryptor_Private</code> interface.
    *
    * @param[in] key_system A <code>PP_Var</code> of type
    * <code>PP_VARTYPE_STRING</code> containing the name of the key system.
    *
    * @param[in] init_data A <code>PP_Var</code> of type
    * <code>PP_VARTYPE_ARRAYBUFFER</code> containing container specific
    * initialization data.
-   *
-   * @return <code>PP_TRUE</code> if this call was forwarded to the CDM
-   * successfully, <code>PP_FALSE</code> otherwise. Once the call reaches the
-   * CDM, the call result/status should be reported through the
-   * <code>PPB_ContentDecryptor_Private</code> interface.
    */
-  PP_Bool GenerateKeyRequest(
+  void GenerateKeyRequest(
       [in] PP_Instance instance,
       [in] PP_Var key_system,
       [in] PP_Var init_data);
 
   /**
    * Provides a key or license to the decryptor for decrypting media data.
    *
    * When the CDM needs more information to complete addition of the key it
    * will call <code>KeyMessage()</code> on the
    * <code>PPB_ContentDecryptor_Private</code> interface, which the browser
    * passes to the application. When the key is ready to use, the CDM
    * must call call <code>KeyAdded()</code> on the
    * <code>PPB_ContentDecryptor_Private</code> interface, and the browser
    * must notify the web application.
    *
    * @param[in] session_id A <code>PP_Var</code> of type
    * <code>PP_VARTYPE_STRING</code> containing the session ID.
    *
    * @param[in] key A <code>PP_Var</code> of type
    * <code>PP_VARTYPE_ARRAYBUFFER</code> containing the decryption key, license,
    * or other message for the given session ID.
    *
    * @param[in] init_data A <code>PP_Var</code> of type
    * <code>PP_VARTYPE_ARRAYBUFFER</code> containing container specific
    * initialization data.
-   *
-   * @return <code>PP_TRUE</code> if this call was forwarded to the CDM
-   * successfully, <code>PP_FALSE</code> otherwise. Once the call reaches the
-   * CDM, the call result/status should be reported through the
-   * <code>PPB_ContentDecryptor_Private</code> interface.
    */
-  PP_Bool AddKey(
+  void AddKey(
       [in] PP_Instance instance,
       [in] PP_Var session_id,
       [in] PP_Var key,
       [in] PP_Var init_data);
 
   /**
    * Cancels a pending key request for the specified session ID.
    *
    * @param[in] session_id A <code>PP_Var</code> of type
    * <code>PP_VARTYPE_STRING</code> containing the session ID.
-   *
-   * @return <code>PP_TRUE</code> if this call was forwarded to the CDM
-   * successfully, <code>PP_FALSE</code> otherwise. Once the call reaches the
-   * CDM, the call result/status should be reported through the
-   * <code>PPB_ContentDecryptor_Private</code> interface.
    */
-  PP_Bool CancelKeyRequest(
+  void CancelKeyRequest(
       [in] PP_Instance instance,
       [in] PP_Var session_id);
 
   /**
    * 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] encrypted_block_info A <code>PP_EncryptedBlockInfo</code> that
    * contains all auxiliary information needed for decryption of the
    * <code>encrypted_block</code>.
-   *
-   * @return <code>PP_TRUE</code> if this call was forwarded to the CDM
-   * successfully, <code>PP_FALSE</code> otherwise. Once the call reaches the
-   * CDM, the call result/status should be reported through the
-   * <code>PPB_ContentDecryptor_Private</code> interface.
    */
-  PP_Bool Decrypt(
+  void Decrypt(
       [in] PP_Instance instance,
       [in] PP_Resource encrypted_block,
       [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] encrypted_block_info A <code>PP_EncryptedBlockInfo</code> that
    * contains all auxiliary information needed for decryption of the
    * <code>encrypted_block</code>.
-   *
-   * @return <code>PP_TRUE</code> if this call was forwarded to the CDM
-   * successfully, <code>PP_FALSE</code> otherwise. Once the call reaches the
-   * CDM, the call result/status should be reported through the
-   * <code>PPB_ContentDecryptor_Private</code> interface.
    */
-  PP_Bool DecryptAndDecode(
+  void DecryptAndDecode(
       [in] PP_Instance instance,
       [in] PP_Resource encrypted_block,
       [in] PP_EncryptedBlockInfo encrypted_block_info);
 };