Merge 146227 "Separate SVG image size and container size"

Merge 146227 "Separate SVG image size and container size"

> Separate SVG image size and container size
> https://bugs.webkit.org/show_bug.cgi?id=112651
> 
> Reviewed by Stephen Chenney.
> 
> Source/WebCore:
> 
> Previously, SVG images could retain their cached size between reloads due to a bug where an
> old container size would be re-used if the image's new container size was not available yet.
> 
> This patch changes SVGImage::size() to return the intrinsic size of the image before a
> container size has been set. SVGImageCache::imageSizeForRenderer will now return the
> image's intrinsic size instead of a cached value if the container size cannot be looked up.
> In javascript, querying [SVGImage].width will now return either the image's intrinsic size
> or the size of 'imageForContainer'.
> 
> Test: svg/as-image/svg-container-size-after-reload.html
> 
> * svg/graphics/SVGImage.cpp:
> (WebCore::SVGImage::setContainerSize):
> (WebCore::SVGImage::containerSize):
> (WebCore::SVGImage::draw):
> (WebCore::SVGImage::dataChanged):
> * svg/graphics/SVGImage.h:
> 
>     The member variable 'm_intrinsicSize' has been added to track the image's intrinsic
>     size. This term can be found in: http://www.w3.org/TR/css3-images/#default-sizing
> 
> * svg/graphics/SVGImageCache.cpp:
> (WebCore::SVGImageCache::imageSizeForRenderer):
> (WebCore::SVGImageCache::imageForRenderer):
> 
>     In both of these functions, image has been renamed to imageForContainer here to clarify
>     that the cached container size is being returned, not the image's intrinsic size.
> 
> LayoutTests:
> 
> * svg/as-image/svg-container-size-after-reload-expected.txt: Added.
> * svg/as-image/svg-container-size-after-reload.html: Added.
> 

TBR=pdr@google.com
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=146635

[pdr., 2013-03-22 18:28:47]

Committed patchset #1 manually as r146635.