RenderLayer       391 Source/core/page/scrolling/ScrollingCoordinator.cpp typedef HashMap<const RenderLayer*, Vector<const LocalFrame*> > LayerFrameMap;
RenderLayer       157 Source/core/rendering/RenderLayer.cpp RenderLayer::~RenderLayer()
RenderLayer        48 Source/core/rendering/RenderLayerFilterInfo.h typedef HashMap<const RenderLayer*, RenderLayerFilterInfo*> RenderLayerFilterInfoMap;
RenderLayer       146 Source/core/rendering/RenderObject.h typedef WTF::HashMap<const RenderLayer*, Vector<LayoutRect> > LayerHitTestRects;