Remove PlatformWidget references

Source/WebCore/page/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
@@ skipping 121 matching lines @@
     void setNeedsOneShotDrawingSynchronization();
 
     virtual TiledBacking* tiledBacking() OVERRIDE;
 
     // In the future when any ScrollableArea can have a node in th ScrollingTree, this should
     // become a virtual function on ScrollableArea.
     uint64_t scrollLayerID() const;
 #endif
 
     bool hasCompositedContent() const;
-    bool hasCompositedContentIncludingDescendants() const;
     bool hasCompositingAncestor() const;
     void enterCompositingMode();
     bool isEnclosedInCompositingLayer() const;
 
     // Only used with accelerated compositing, but outside the #ifdef to make linkage easier.
     // Returns true if the flush was completed.
     bool flushCompositingStateIncludingSubframes();
 
     // Returns true when a paint with the PaintBehaviorFlattenCompositingLayers flag set gives
     // a faithful representation of the content.
@@ skipping 29 matching lines @@
     
     virtual IntRect windowClipRect(bool clipToContents = true) const;
     IntRect windowClipRectForFrameOwner(const HTMLFrameOwnerElement*, bool clipToLayerContents) const;
 
     virtual IntRect windowResizerRect() const;
 
     virtual float visibleContentScaleFactor() const OVERRIDE;
 
     virtual void setFixedVisibleContentRect(const IntRect&) OVERRIDE;
     virtual void setScrollPosition(const IntPoint&) OVERRIDE;
-    void scrollPositionChangedViaPlatformWidget();
     virtual void repaintFixedElementsAfterScrolling();
     virtual void updateFixedElementsAfterScrolling();
     virtual bool shouldRubberBandInDirection(ScrollDirection) const;
     virtual bool requestScrollPositionUpdate(const IntPoint&) OVERRIDE;
     virtual bool isRubberBandInProgress() const OVERRIDE;
 
     // This is different than visibleContentRect() in that it ignores negative (or overly positive)
     // offsets from rubber-banding, and it takes zooming into account. 
     LayoutRect viewportConstrainedVisibleContentRect() const;
 
@@ skipping 461 matching lines @@
     ASSERT(!widget || widget->isFrameView());
     return static_cast<const FrameView*>(widget);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toFrameView(const FrameView*);
 
 } // namespace WebCore
 
 #endif // FrameView_h