Encrypted Media: Use uint32 for systemCode in SessionError.

ppapi/api/private/ppb_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>PPB_ContentDecryptor_Private</code>
  * interface. Note: This is a special interface, only to be used for Content
  * Decryption Modules, not normal plugins.
  */
 
 [generate_thunk]
 
 label Chrome {
-  M34 = 0.10
+  M35 = 0.11
 };
 
 /**
  * <code>PPB_ContentDecryptor_Private</code> structure contains the function
  * pointers the browser must implement to support plugins implementing the
  * <code>PPP_ContentDecryptor_Private</code> interface. This interface provides
  * browser side support for the Content Decryption Module (CDM) for Encrypted
  * Media Extensions: http://www.w3.org/TR/encrypted-media/
  */
 interface PPB_ContentDecryptor_Private {
@@ skipping 81 matching lines @@
    * is intended.
    *
    * @param[in] media_error A MediaKeyError.
    *
    * @param[in] system_error A system error code.
    */
   void SessionError(
       [in] PP_Instance instance,
       [in] uint32_t session_id,
       [in] int32_t media_error,
-      [in] int32_t system_code);
+      [in] uint32_t system_code);
 
   /**
    * Called after the <code>Decrypt()</code> method on the
    * <code>PPP_ContentDecryptor_Private</code> interface completes to
    * deliver decrypted_block to the browser for decoding and rendering.
    *
    * The plugin must not hold a reference to the encrypted buffer resource
    * provided to <code>Decrypt()</code> when it calls this method. The browser
    * will reuse the buffer in a subsequent <code>Decrypt()</code> call.
    *
@@ skipping 117 matching lines @@
    *
    * @param[in] decrypted_sample_info A <code>PP_DecryptedSampleInfo</code> that
    * contains the tracking info and result code associated with the decrypted
    * samples.
    */
   void DeliverSamples(
       [in] PP_Instance instance,
       [in] PP_Resource audio_frames,
       [in] PP_DecryptedSampleInfo decrypted_sample_info);
 };