Remove more frame-level scrolling machinery.

sky/engine/web/WebLocalFrameImpl.h

 /*
  * Copyright (C) 2009 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 132 matching lines @@
 
     static WebLocalFrameImpl* fromFrame(LocalFrame*);
     static WebLocalFrameImpl* fromFrame(LocalFrame&);
 
     WebViewImpl* viewImpl() const;
 
     FrameView* frameView() const { return frame() ? frame()->view() : 0; }
 
     void didFail(const ResourceError&);
 
-    // Sets whether the WebLocalFrameImpl allows its document to be scrolled.
-    // If the parameter is true, allow the document to be scrolled.
-    // Otherwise, disallow scrolling.
-    virtual void setCanHaveScrollbars(bool) override;
-
     LocalFrame* frame() const { return m_frame.get(); }
     WebFrameClient* client() const { return m_client; }
     void setClient(WebFrameClient* client) { m_client = client; }
 
     void setInputEventsTransformForEmulation(const IntSize&, float);
 
     static void selectWordAroundPosition(LocalFrame*, VisiblePosition);
 
     // Invalidates both content area and the scrollbar.
     void invalidateAll() const;
@@ skipping 21 matching lines @@
     // Stores the additional input events offset and scale when device metrics emulation is enabled.
     IntSize m_inputEventsOffsetForEmulation;
     float m_inputEventsScaleFactorForEmulation;
 };
 
 DEFINE_TYPE_CASTS(WebLocalFrameImpl, WebFrame, frame, frame->isWebLocalFrame(), frame.isWebLocalFrame());
 
 } // namespace blink
 
 #endif