Encrypted Media: Use uint32 for systemCode in SessionError.

content/renderer/media/webmediaplayer_impl.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_WEBMEDIAPLAYER_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 162 matching lines @@
 
   void OnPipelineSeek(media::PipelineStatus status);
   void OnPipelineEnded();
   void OnPipelineError(media::PipelineStatus error);
   void OnPipelineBufferingState(
       media::Pipeline::BufferingState buffering_state);
   void OnDemuxerOpened();
   void OnKeyAdded(const std::string& session_id);
   void OnKeyError(const std::string& session_id,
                   media::MediaKeys::KeyError error_code,
-                  int system_code);
+                  uint32 system_code);
   void OnKeyMessage(const std::string& session_id,
                     const std::vector<uint8>& message,
                     const std::string& default_url);
   void OnNeedKey(const std::string& type,
                  const std::vector<uint8>& init_data);
   void OnAddTextTrack(const media::TextTrackConfig& config,
                       const media::AddTextTrackDoneCB& done_cb);
   void SetOpaque(bool);
 
  private:
@@ skipping 158 matching lines @@
   WebContentDecryptionModuleImpl* web_cdm_;
 
   media::DecryptorReadyCB decryptor_ready_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_IMPL_H_