https://bugs.webkit.org/show_bug.cgi?id=111587

Reviewed by Dirk Schulze.

Source/WebCore:

When calculating the resolution for resource image buffers, we need to also consider CSS
transforms. This patch updates calculateTransformationToOutermostSVGCoordinateSystem()
(renamed to calculateTransformationToOutermostCoordinateSystem) to include the affine
component from CSS transforms by walking the parent layer tree.

Test: svg/custom/resources-css-scaled.html

* rendering/svg/RenderSVGResourceClipper.cpp:
(WebCore::RenderSVGResourceClipper::applyClippingToContext):
* rendering/svg/RenderSVGResourceFilter.cpp:
(WebCore::RenderSVGResourceFilter::applyResource):
* rendering/svg/RenderSVGResourceGradient.cpp:
(WebCore::createMaskAndSwapContextForTextGradient):
(WebCore::clipToTextMask):
* rendering/svg/RenderSVGResourceMasker.cpp:
(WebCore::RenderSVGResourceMasker::applyResource):
* rendering/svg/RenderSVGResourcePattern.cpp:
(WebCore::RenderSVGResourcePattern::buildPattern):
* rendering/svg/SVGRenderingContext.cpp:
(WebCore::SVGRenderingContext::calculateScreenFontSizeScalingFactor):
(WebCore::SVGRenderingContext::calculateTransformationToOutermostCoordinateSystem):
* rendering/svg/SVGRenderingContext.h:
(SVGRenderingContext):

LayoutTests:

* svg/custom/resources-css-scaled-expected.html: Added.
* svg/custom/resources-css-scaled.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145541 268f45cc-cd09-0410-ab3c-d52691b4dbfc