Merge 145726 "Fix body background image geometry calculation"

Merge 145726 "Fix body background image geometry calculation"

> Fix body background image geometry calculation
> https://bugs.webkit.org/show_bug.cgi?id=112226
> 
> Reviewed by Stephen Chenney.
> 
> Source/WebCore:
> 
> Images that depend on a container size require a call to set the container size before
> rendering, and a call to look up the correct image during painting.
> 
> The body's renderer is special in that it may not be the renderer that actually paints its
> background. This patch fixes a bug where the correct RenderObject was used for looking up
> the image, but not for setting the container size. This fixes SVG background images on body.
> 
> Test: svg/as-background-image/svg-as-background-body.html
> 
> * rendering/RenderBoxModelObject.cpp:
> (WebCore::RenderBoxModelObject::paintFillLayerExtended):
> (WebCore::RenderBoxModelObject::calculateBackgroundImageGeometry):
> 
>     This change introduces clientForBackgroundImage in the background geometry calculation.
>     This is very similar to how the client is looked up in paintFillLayerExtended.
> 
> * rendering/RenderBoxModelObject.h:
> 
>     The new signature for calculateBackgroundImageGeometry now mirrors
>     paintFillLayerExtended, containing a parameter for the correct background renderer.
> 
> (RenderBoxModelObject):
> 
> LayoutTests:
> 
> This test is required to have a repeating background, as we optimize non-repeating
> backgrounds so the bug is not hit. A light green color is used so the text is still
> readable, and gridlines are present to prove the correct container size is being used.
> 
> * svg/as-background-image/svg-as-background-body-expected.html: Added.
> * svg/as-background-image/svg-as-background-body.html: Added.
> 

TBR=pdr@google.com
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=145952

[pdr., 2013-03-15 22:11:02]

Committed patchset #1 manually as r145952.