Remove viewportConstrained plumbing.

sky/engine/core/frame/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 120 matching lines @@
 
     IntRect windowClipRect(IncludeScrollbarsInRect = ExcludeScrollbars) const;
 
     float visibleContentScaleFactor() const { return m_visibleContentScaleFactor; }
     void setVisibleContentScaleFactor(float);
 
     float inputEventsScaleFactor() const;
     IntSize inputEventsOffsetForEmulation() const;
     void setInputEventsTransformForEmulation(const IntSize&, float);
 
-    // This is different than visibleContentRect() in that it ignores negative (or overly positive)
-    // offsets from rubber-banding, and it takes zooming into account.
-    void viewportConstrainedVisibleContentSizeChanged(bool widthChanged, bool heightChanged);
-
     AtomicString mediaType() const;
     void setMediaType(const AtomicString&);
 
     void addSlowRepaintObject();
     void removeSlowRepaintObject();
     bool hasSlowRepaintObjects() const { return m_slowRepaintObjectCount; }
 
-    // Fixed-position objects.
-    typedef HashSet<RenderObject*> ViewportConstrainedObjectSet;
-    void addViewportConstrainedObject(RenderObject*);
-    void removeViewportConstrainedObject(RenderObject*);
-    const ViewportConstrainedObjectSet* viewportConstrainedObjects() const { return m_viewportConstrainedObjects.get(); }
-    bool hasViewportConstrainedObjects() const { return m_viewportConstrainedObjects && m_viewportConstrainedObjects->size() > 0; }
-
     void restoreScrollbar();
 
     void postLayoutTimerFired(Timer<FrameView>*);
 
     bool wasScrolledByUser() const;
     void setWasScrolledByUser(bool);
 
     void addWidget(RenderWidget*);
     void removeWidget(RenderWidget*);
     void updateWidgetPositions();
@@ skipping 166 matching lines @@
     virtual IntPoint convertFromContainingView(const IntPoint&) const override;
 
     void updateWidgetPositionsIfNeeded();
 
     bool wasViewportResized();
     void sendResizeEventIfNeeded();
 
     void scrollPositionChanged();
     void didScrollTimerFired(Timer<FrameView>*);
 
-    void updateLayersAndCompositingAfterScrollIfNeeded();
-    void updateFixedElementPaintInvalidationRectsAfterScroll();
     void updateCompositedSelectionBoundsIfNeeded();
 
     void setLayoutSizeInternal(const IntSize&);
 
     bool paintInvalidationIsAllowed() const
     {
         return !isInPerformLayout() || canInvalidatePaintDuringPerformLayout();
     }
 
     static double s_currentFrameTimeStamp; // used for detecting decoded resource thrash in the cache
@@ skipping 45 matching lines @@
 
     bool m_isTrackingPaintInvalidations; // Used for testing.
     Vector<IntRect> m_trackedPaintInvalidationRects;
 
     RefPtr<Node> m_nodeToDraw;
     PaintBehavior m_paintBehavior;
     bool m_isPainting;
 
     OwnPtr<ScrollableAreaSet> m_scrollableAreas;
     OwnPtr<ResizerAreaSet> m_resizerAreas;
-    OwnPtr<ViewportConstrainedObjectSet> m_viewportConstrainedObjects;
 
     bool m_hasSoftwareFilters;
 
     float m_visibleContentScaleFactor;
     IntSize m_inputEventsOffsetForEmulation;
     float m_inputEventsScaleFactorForEmulation;
 
     IntSize m_layoutSize;
     bool m_layoutSizeFixedToFrameSize;
 
@@ skipping 26 matching lines @@
         m_view->setCanInvalidatePaintDuringPerformLayout(m_originalValue);
     }
 private:
     FrameView* m_view;
     bool m_originalValue;
 };
 
 } // namespace blink
 
 #endif // FrameView_h