Remove some more frame-level scrolling machinery.

sky/engine/public/web/WebFrame.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 91 matching lines @@
     // Geometry -----------------------------------------------------------
 
     // NOTE: These routines do not force page layout so their results may
     // not be accurate if the page layout is out-of-date.
 
     // If set to false, do not draw scrollbars on this frame's view.
     virtual void setCanHaveScrollbars(bool) = 0;
 
     // The scroll offset from the top-left corner of the frame in pixels.
     virtual WebSize scrollOffset() const = 0;
-    virtual void setScrollOffset(const WebSize&) = 0;
 
     // The minimum and maxium scroll positions in pixels.
     virtual WebSize minimumScrollOffset() const = 0;
     virtual WebSize maximumScrollOffset() const = 0;
 
     // The size of the contents area.
     virtual WebSize contentsSize() const = 0;
 
     // Returns true if the contents (minus scrollbars) has non-zero area.
     virtual bool hasVisibleContent() const = 0;
@@ skipping 208 matching lines @@
 private:
 };
 
 #if BLINK_IMPLEMENTATION
 Frame* toCoreFrame(const WebFrame*);
 #endif
 
 } // namespace blink
 
 #endif