MediaStream API: Addding support for UA specific error messages for gUM

Source/modules/mediastream/UserMediaRequest.h

 /*
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 42 matching lines @@
     static PassRefPtr<UserMediaRequest> create(ExecutionContext*, UserMediaController*, const Dictionary& options, PassOwnPtr<NavigatorUserMediaSuccessCallback>, PassOwnPtr<NavigatorUserMediaErrorCallback>, ExceptionState&);
     virtual ~UserMediaRequest();
 
     NavigatorUserMediaSuccessCallback* successCallback() const { return m_successCallback.get(); }
     NavigatorUserMediaErrorCallback* errorCallback() const { return m_errorCallback.get(); }
     Document* ownerDocument();
 
     void start();
 
     void succeed(PassRefPtr<MediaStreamDescriptor>);
-    void fail(const String& description);
-    void failConstraint(const String& constraintName, const String& description);
+    void failPermissionDenied(const String& message);
+    void failConstraint(const String& constraintName, const String& message);
+    void failUASpecific(const String& name, const String& message, const String& constraintName);
 
     bool audio() const;
     bool video() const;
     blink::WebMediaConstraints audioConstraints() const;
     blink::WebMediaConstraints videoConstraints() const;
 
     // ContextLifecycleObserver
     virtual void contextDestroyed() OVERRIDE;
 
 private:
     UserMediaRequest(ExecutionContext*, UserMediaController*, blink::WebMediaConstraints audio, blink::WebMediaConstraints video, PassOwnPtr<NavigatorUserMediaSuccessCallback>, PassOwnPtr<NavigatorUserMediaErrorCallback>);
 
     blink::WebMediaConstraints m_audio;
     blink::WebMediaConstraints m_video;
 
     UserMediaController* m_controller;
 
     OwnPtr<NavigatorUserMediaSuccessCallback> m_successCallback;
     OwnPtr<NavigatorUserMediaErrorCallback> m_errorCallback;
 };
 
 } // namespace WebCore
 
 #endif // UserMediaRequest_h