[Webkit-unassigned] [Bug 74196] [chromium] Delegate scroll events to the main thread when needed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74196





--- Comment #9 from James Robinson <jamesr at chromium.org>  2011-12-19 16:18:22 PST ---
(From update of attachment 119684)
View in context: https://bugs.webkit.org/attachment.cgi?id=119684&action=review

> Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp:486
> +    IntPoint contentPoint(layerImpl->screenSpaceTransform().inverse().mapPoint(viewportPoint));

if this layer's screen space transform is not invertible, you need to return false here - just calling .inverse().mapPoint() will map the point through an identity transform

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