Optimize layout/repaint on FrameView resize

Source/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 83 matching lines @@
 
     void setCanRepaintDuringPerformLayout(bool b) { m_canRepaintDuringPerformLayout = b; }
     bool canRepaintDuringPerformLayout() const { return m_canRepaintDuringPerformLayout; }
 
     RenderObject* layoutRoot(bool onlyDuringLayout = false) const;
     void clearLayoutSubtreeRoot() { m_layoutSubtreeRoot = 0; }
     int layoutCount() const { return m_layoutCount; }
 
     bool needsLayout() const;
     void setNeedsLayout();
+    void setNeedsResizeLayout();
 
     // Methods for getting/setting the size Blink should use to layout the contents.
     IntSize layoutSize(IncludeScrollbarsInRect = ExcludeScrollbars) const;
     void setLayoutSize(const IntSize&);
 
     // If this is set to false, the layout size will need to be explicitly set by the owner.
     // E.g. WebViewImpl sets its mainFrame's layout size manually
     void setLayoutSizeFixedToFrameSize(bool isFixed) { m_layoutSizeFixedToFrameSize = isFixed; }
     bool layoutSizeFixedToFrameSize() { return m_layoutSizeFixedToFrameSize; }
 
@@ skipping 144 matching lines @@
     void flushAnyPendingPostLayoutTasks();
 
     virtual bool shouldSuspendScrollAnimations() const OVERRIDE;
     virtual void scrollbarStyleChanged(int newStyle, bool forceUpdate) OVERRIDE;
 
     RenderBox* embeddedContentBox() const;
 
     void setTracksRepaints(bool);
     bool isTrackingRepaints() const { return m_isTrackingRepaints; }
     void resetTrackedRepaints();
+    const Vector<IntRect>& trackedRepaintRects() const { return m_trackedRepaintRects; }
     String trackedRepaintRectsAsText() const;
 
     typedef HashSet<ScrollableArea*> ScrollableAreaSet;
     // Returns whether the scrollable area has just been newly added.
     bool addScrollableArea(ScrollableArea*);
     // Returns whether the scrollable area has just been removed.
     bool removeScrollableArea(ScrollableArea*);
     bool containsScrollableArea(const ScrollableArea*) const;
     const ScrollableAreaSet* scrollableAreas() const { return m_scrollableAreas.get(); }
 
@@ skipping 283 matching lines @@
         m_view->setCanRepaintDuringPerformLayout(m_originalValue);
     }
 private:
     FrameView* m_view;
     bool m_originalValue;
 };
 
 } // namespace WebCore
 
 #endif // FrameView_h