scrollContentsFastPath 1429 Source/core/frame/FrameView.cpp bool FrameView::scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect)
scrollContentsFastPath  561 Source/platform/scroll/ScrollView.cpp bool ScrollView::scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect)