Encrypted Media: Use uint32 for systemCode in SessionError.

content/renderer/pepper/pepper_plugin_instance_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
 
 #include <list>
 #include <set>
 #include <string>
@@ skipping 446 matching lines @@
   virtual void SessionMessage(PP_Instance instance,
                               uint32_t session_id,
                               PP_Var message,
                               PP_Var destination_url) OVERRIDE;
   virtual void SessionReady(PP_Instance instance, uint32_t session_id) OVERRIDE;
   virtual void SessionClosed(PP_Instance instance,
                              uint32_t session_id) OVERRIDE;
   virtual void SessionError(PP_Instance instance,
                             uint32_t session_id,
                             int32_t media_error,
-                            int32_t system_code) OVERRIDE;
+                            uint32_t system_code) OVERRIDE;
   virtual void DeliverBlock(PP_Instance instance,
                             PP_Resource decrypted_block,
                             const PP_DecryptedBlockInfo* block_info) OVERRIDE;
   virtual void DecoderInitializeDone(PP_Instance instance,
                                      PP_DecryptorStreamType decoder_type,
                                      uint32_t request_id,
                                      PP_Bool success) OVERRIDE;
   virtual void DecoderDeinitializeDone(PP_Instance instance,
                                        PP_DecryptorStreamType decoder_type,
                                        uint32_t request_id) OVERRIDE;
@@ skipping 405 matching lines @@
   base::WeakPtrFactory<PepperPluginInstanceImpl> view_change_weak_ptr_factory_;
   base::WeakPtrFactory<PepperPluginInstanceImpl> weak_factory_;
 
   friend class PpapiPluginInstanceTest;
   DISALLOW_COPY_AND_ASSIGN(PepperPluginInstanceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_