Encrypted Media: Use uint32 for systemCode in SessionError.

content/renderer/media/crypto/proxy_decryptor.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_CRYPTO_PROXY_DECRYPTOR_H_
 #define CONTENT_RENDERER_MEDIA_CRYPTO_PROXY_DECRYPTOR_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 31 matching lines @@
 // TODO(xhwang): Currently we don't support run-time switching among decryptor
 // objects. Fix this when needed.
 // TODO(xhwang): The ProxyDecryptor is not a Decryptor. Find a better name!
 class ProxyDecryptor {
  public:
   // These are similar to the callbacks in media_keys.h, but pass back the
   // web session ID rather than the internal session ID.
   typedef base::Callback<void(const std::string& session_id)> KeyAddedCB;
   typedef base::Callback<void(const std::string& session_id,
                               media::MediaKeys::KeyError error_code,
-                              int system_code)> KeyErrorCB;
+                              uint32 system_code)> KeyErrorCB;
   typedef base::Callback<void(const std::string& session_id,
                               const std::vector<uint8>& message,
                               const std::string& default_url)> KeyMessageCB;
 
   ProxyDecryptor(
 #if defined(ENABLE_PEPPER_CDMS)
       const CreatePepperCdmCB& create_pepper_cdm_cb,
 #elif defined(OS_ANDROID)
       RendererMediaPlayerManager* manager,
       int cdm_id,
@@ skipping 29 matching lines @@
 
   // Callbacks for firing session events.
   void OnSessionCreated(uint32 session_id, const std::string& web_session_id);
   void OnSessionMessage(uint32 session_id,
                         const std::vector<uint8>& message,
                         const std::string& default_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);
 
   // Helper function to determine session_id for the provided |web_session_id|.
   uint32 LookupSessionId(const std::string& web_session_id) const;
 
   // Helper function to determine web_session_id for the provided |session_id|.
   // The returned web_session_id is only valid on the main thread, and should be
   // stored by copy.
   const std::string& LookupWebSessionId(uint32 session_id) const;
 
   base::WeakPtrFactory<ProxyDecryptor> weak_ptr_factory_;
@@ skipping 24 matching lines @@
   std::set<uint32> persistent_sessions_;
 
   bool is_clear_key_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyDecryptor);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_CRYPTO_PROXY_DECRYPTOR_H_