Revert of Remove MediaStreamTrack.getSources().

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * 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 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef MediaStreamTrack_h
 #define MediaStreamTrack_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/EventTargetModules.h"
 #include "modules/ModulesExport.h"
+#include "modules/mediastream/SourceInfo.h"
 #include "platform/mediastream/MediaStreamDescriptor.h"
 #include "platform/mediastream/MediaStreamSource.h"
 #include "public/platform/WebMediaConstraints.h"
 #include "wtf/Forward.h"
 #include <memory>
 
 namespace blink {
 
 class AudioSourceProvider;
 class ExceptionState;
@@ skipping 17 matching lines @@
   String label() const;
   bool remote() const;
 
   bool enabled() const;
   void setEnabled(bool);
 
   bool muted() const;
 
   String readyState() const;
 
+  static void getSources(ExecutionContext*,
+                         MediaStreamTrackSourcesCallback*,
+                         ExceptionState&);
   void stopTrack(ExceptionState&);
   virtual MediaStreamTrack* clone(ExecutionContext*);
 
   void getConstraints(MediaTrackConstraints&);
 
   // This function is called when constrains have been successfully applied.
   // Called from UserMediaRequest when it succeeds. It is not IDL-exposed.
   void setConstraints(const WebMediaConstraints&);
 
   void getSettings(MediaTrackSettings&);
@@ skipping 38 matching lines @@
   bool m_stopped;
   Member<MediaStreamComponent> m_component;
   WebMediaConstraints m_constraints;
 };
 
 typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;
 
 }  // namespace blink
 
 #endif  // MediaStreamTrack_h