Bug 134991

Summary:	Synchronize offsetFromRenderer() + devicePixelFractionFromRenderer() offset calls between RenderLayerBacking and GraphicsLayer.
Product:	WebKit	Reporter:	zalan <zalan>
Component:	Layout and Rendering	Assignee:	zalan <zalan>
Status:	NEW ---
Severity:	Normal	CC:	simon.fraser
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified

Description zalan 2014-07-16 15:23:49 PDT

On the way out (as dirty rects) those calls are in RenderLayerBacking (RenderLayerBacking::setContentsNeedDisplay()), while on the way in (as clip rects) offsetFromRenderer() is in GraphicsLayer (GraphicsLayer::paintGraphicsLayerContents) while  devicePixelFractionFromRenderer() is in RenderLayerBacking (RenderLayerBacking::paintContents)

They both should either be in GraphicsLayer or in RenderLayerBacking.