Merge 144350

Merge 144350
> Focus ring for a child layer is incorrectly offset by ancestor composited layer's position
> https://bugs.webkit.org/show_bug.cgi?id=110895
> 
> Reviewed by Simon Fraser.
> 
> Source/WebCore:
> 
> Test: compositing/sub-layer-focus-ring.html
> 
> The problem occurs in RenderBlock::addFocusRingRects() where the absolute position of a sub-layer is used to calculate the focus ring rect of the layer.
> Should use the relative position to the current paintContainer instead.
> 
> To fix the issue:
> - RenderLayer passes LayerPaintingInfo.rootLayer to PaintInfo.paintContainer
> - Let RenderObject::paintFocusRing() and RenderObject::paintOutline() take PaintInfo instead of GraphicsContext* so that the paintContainer can be passed
> - RenderBlock::addFocusRingRects() uses localToContainerPoint(FloatPoint(), paintContainer) instead of localToAbsolute() to calculate the focus ring rect of a sublayer.
> 
> * rendering/PaintInfo.h:
> (WebCore):
> (WebCore::PaintInfo::PaintInfo): Add a field paintContainer (the RenderLayerModelObject which originates the current painting)
> (PaintInfo):
> * rendering/RenderBlock.cpp:
> (WebCore::RenderBlock::paintObject):
> (WebCore::RenderBlock::paintContinuationOutlines):
> (WebCore::RenderBlock::addFocusRingRects): Use the added paintContainer parameter to calculate the relative offset of the child layer.
> * rendering/RenderLayer.cpp:
> (WebCore::RenderLayer::paintBackgroundForFragments): Pass LayerPaintingInfo.rootLayer to PaintInfo.paintContainer.
> (WebCore::RenderLayer::paintForegroundForFragmentsWithPhase): Ditto.
> (WebCore::RenderLayer::paintOutlineForFragments): Ditto.
> (WebCore::RenderLayer::paintMaskForFragments): Ditto.
> * rendering/RenderLayer.cpp:
> * rendering/RenderObject.cpp:
> (WebCore::RenderObject::paintFocusRing): Now takes PaintInfo instead of GraphicsContext*. Pass paintInfo.paintContainer to addFocusRingRects().
> (WebCore::RenderObject::paintOutline): Now takes PaintInfo instead of GraphicsContext*.
> (WebCore::RenderObject::absoluteFocusRingQuads):
> * rendering/RenderObject.h:
> (WebCore::RenderObject::addFocusRingRects): Add paintContainer parameter.
> 
> LayoutTests:
> 
> New ref test for the bug.
> 
> * compositing/sub-layer-focus-ring-expected.html: Added.
> * compositing/sub-layer-focus-ring.html: Added.
> 

TBR=wangxianzhu@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=145118

[Xianzhu, 2013-03-07 20:16:22]

Committed patchset #1 manually as r145118.