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

public/web/WebUserMediaRequest.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 56 matching lines @@
     BLINK_EXPORT bool audio() const;
     BLINK_EXPORT bool video() const;
     BLINK_EXPORT WebMediaConstraints audioConstraints() const;
     BLINK_EXPORT WebMediaConstraints videoConstraints() const;
 
     BLINK_EXPORT WebSecurityOrigin securityOrigin() const;
     BLINK_EXPORT WebDocument ownerDocument() const;
 
     BLINK_EXPORT void requestSucceeded(const WebMediaStream&);
 
-    BLINK_EXPORT void requestFailed(const WebString& description = WebString());
+    BLINK_EXPORT void requestDenied(const WebString& description = WebString());
     BLINK_EXPORT void requestFailedConstraint(const WebString& constraintName, const WebString& description = WebString());
+    BLINK_EXPORT void requestFailedUASpecific(const WebString& name, const WebString& constraintName = WebString(), const WebString& description = WebString());
+
+    // DEPRECATED
+    BLINK_EXPORT void requestFailed(const WebString& description = WebString()) { requestDenied(description); }
 
 #if BLINK_IMPLEMENTATION
     WebUserMediaRequest(const PassRefPtr<WebCore::UserMediaRequest>&);
     WebUserMediaRequest(WebCore::UserMediaRequest*);
     operator WebCore::UserMediaRequest*() const;
 #endif
 
 private:
     WebPrivatePtr<WebCore::UserMediaRequest> m_private;
 };
 
 inline bool operator==(const WebUserMediaRequest& a, const WebUserMediaRequest& b)
 {
     return a.equals(b);
 }
 
 } // namespace blink
 
 #endif // WebUserMediaRequest_h