145189 2015-05-19 15:36:57 -0700 Investigate removing mutex from ScrollingTree 2015-05-19 15:37:19 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) All All NEW P2 Normal --- 1 bfulgham bfulgham bdakin bfulgham sam simon.fraser oldest_to_newest 1096074 0 bfulgham 2015-05-19 15:36:57 -0700 The "setMainFrameIsRubberBanding/isRubberBandInProgress" and "setMainFrameIsScrollSnapping/isScrollSnapInProgress" use a mutex to coordinate main thread/scrolling thread communications. Instead, we should have these values copied to the scrolling thread on the scroll state node tree, and have any updates messages back from the scrolling thread, as we do for other values.