Share GeometryMapper cache between pre-paint and compositing.

third_party/WebKit/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
@@ skipping 51 matching lines @@
 namespace blink {
 
 class AXObjectCache;
 class ComputedStyle;
 class DocumentLifecycle;
 class Cursor;
 class Element;
 class ElementVisibilityObserver;
 class Frame;
 class FloatSize;
+class GeometryMapper;
 class JSONArray;
 class JSONObject;
 class LayoutItem;
 class LayoutViewItem;
 class LayoutPart;
 class LocalFrame;
 class KURL;
 class Node;
 class LayoutAnalyzer;
 class LayoutBox;
@@ skipping 1116 matching lines @@
   MainThreadScrollingReasons m_mainThreadScrollingReasons;
   // For recording main thread scrolling reasons
   // due to layout object properties. e.g. opacity, transform.
   // The size of the vector depends on the number of
   // main thread scrolling reasons.
   Vector<int> m_mainThreadScrollingReasonsCounter;
 
   // TODO(kenrb): Remove these when https://crbug.com/680606 is resolved.
   std::unique_ptr<CompositorAnimationTimeline> m_animationTimeline;
   std::unique_ptr<CompositorAnimationHost> m_animationHost;
+
+  std::unique_ptr<GeometryMapper> m_geometryMapper;
 };
 
 inline void FrameView::incrementVisuallyNonEmptyCharacterCount(unsigned count) {
   if (m_isVisuallyNonEmpty)
     return;
   m_visuallyNonEmptyCharacterCount += count;
   // Use a threshold value to prevent very small amounts of visible content from
   // triggering didMeaningfulLayout.  The first few hundred characters rarely
   // contain the interesting content of the page.
   static const unsigned visualCharacterThreshold = 200;
@@ skipping 20 matching lines @@
                   widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->isFrameView(),
                   scrollableArea.isFrameView());
 
 }  // namespace blink
 
 #endif  // FrameView_h