Media Controls: move timeline related code to modules.

third_party/WebKit/Source/core/html/media/MediaControls.h

 // Copyright 2017 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 MediaControls_h
 #define MediaControls_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/heap/Visitor.h"
@@ skipping 56 matching lines @@
   virtual LayoutObject* PanelLayoutObject() = 0;
   // Returns the layout object of the media controls container. Maybe null.
   // TODO(mlamouri): required by LayoutVTTCue.
   virtual LayoutObject* ContainerLayoutObject() = 0;
 
   // TODO: the following are required by other parts of the media controls
   // implementation and could be removed when the full implementation has moved
   // to modules.
   virtual HTMLDivElement* PanelElement() = 0;
   virtual Document& OwnerDocument() = 0;
-  virtual void BeginScrubbing() = 0;
-  virtual void EndScrubbing() = 0;
-  virtual void UpdateCurrentTimeDisplay() = 0;
-  virtual bool OverflowMenuVisible() = 0;
   virtual void OnMediaControlsEnabledChange() = 0;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   Member<HTMLMediaElement> media_element_;
 };
 
 }  // namespace blink
 
 #endif  // MediaControls_h