Encrypted Media: Use uint32 for systemCode in SessionError.

content/renderer/media/android/proxy_media_keys.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_ANDROID_PROXY_MEDIA_KEYS_H_
 #define CONTENT_RENDERER_MEDIA_ANDROID_PROXY_MEDIA_KEYS_H_
 
 #include "base/basictypes.h"
 #include "media/base/media_keys.h"
 
@@ skipping 34 matching lines @@
 
   // Callbacks.
   void OnSessionCreated(uint32 session_id, const std::string& web_session_id);
   void OnSessionMessage(uint32 session_id,
                         const std::vector<uint8>& message,
                         const std::string& destination_url);
   void OnSessionReady(uint32 session_id);
   void OnSessionClosed(uint32 session_id);
   void OnSessionError(uint32 session_id,
                       media::MediaKeys::KeyError error_code,
-                      int system_code);
+                      uint32 system_code);
 
  private:
   RendererMediaPlayerManager* manager_;
   int cdm_id_;
   media::SessionCreatedCB session_created_cb_;
   media::SessionMessageCB session_message_cb_;
   media::SessionReadyCB session_ready_cb_;
   media::SessionClosedCB session_closed_cb_;
   media::SessionErrorCB session_error_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyMediaKeys);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_ANDROID_PROXY_MEDIA_KEYS_H_