Merge 139346

Merge 139346
> ScrollingCoordinator touch event hit rects aren't converted to proper coordinates when in nested views
> https://bugs.webkit.org/show_bug.cgi?id=106383
> 
> Reviewed by James Robinson.
> 
> Source/WebCore: 
> 
> ScrollingCoordinator uses clippedOverflowRectForRepaint(0) to generate the bounds for a renderer's hit
> testing rect. The rect this returns is in the coordinates of its document. This change converts the
> rect to the outermost view's coordinate system using convertToContainingView.
> 
> Tests: platform/chromium/fast/events/touch/touch-hit-rects-in-iframe.html
> 
> * page/scrolling/ScrollingCoordinator.cpp:
> (WebCore::accumulateRendererTouchEventTargetRects):
> 
> LayoutTests: 
> 
> * platform/chromium/fast/events/touch/resources: Added.
> * platform/chromium/fast/events/touch/resources/frame-with-touch-handler.html: Added.
> * platform/chromium/fast/events/touch/touch-hit-rects-in-iframe-expected.txt: Added.
> * platform/chromium/fast/events/touch/touch-hit-rects-in-iframe.html: Added.
> 

TBR=leviw@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=139462