https://bugs.webkit.org/show_bug.cgi?id=76559

Reviewed by Zoltan Herczeg.

Source/WebCore:

Based on patch by Kelly Norton <knorton@google.com>. I extended the patch
to correctly handle relative length resolution as well.

RenderSVGImage doesn't react on setNeedsBoundariesUpdate() calls
and thus fails to update its boundaries in some cases.

The logic is also inconsistent, compared to the other renderers.
Fix that properly, by reusing the method used in RenderSVGViewportContainer.
Call calculateImageViewport() immediately, after initializing the LayoutRepainter.
Previously we resolved the image viewport in RenderSVGImage::updateFromElement. This is
wrong, as it queries the frameRect() of the RenderSVGRoot in a state, where the renderer
still needs layout, leading to wrong results.

I turned Kellys manual testcase into a predictable test, see svg/repaint/image-with-clip-path.svg
Relative sized image handling is tested in svg/custom/relative-sized-image.xhtml now.

Tests: svg/custom/relative-sized-image.xhtml
       svg/repaint/image-with-clip-path.svg

* rendering/svg/RenderSVGImage.cpp:
(WebCore::RenderSVGImage::RenderSVGImage):
(WebCore::RenderSVGImage::updateImageViewport):
(WebCore::RenderSVGImage::layout):
* rendering/svg/RenderSVGImage.h:
(WebCore::RenderSVGImage::setNeedsBoundariesUpdate):
* svg/SVGImageElement.cpp:
(WebCore::SVGImageElement::svgAttributeChanged):

LayoutTests:

Update results after fixing RenderSVGImage repainting.

* platform/chromium-win/svg/W3C-SVG-1.1/masking-path-04-b-expected.txt:
* platform/chromium/test_expectations.txt:
* platform/mac/svg/W3C-SVG-1.1/masking-path-04-b-expected.png:
* platform/mac/svg/W3C-SVG-1.1/masking-path-04-b-expected.txt:
* platform/mac/svg/custom/relative-sized-image-expected.png: Added.
* platform/mac/svg/custom/relative-sized-image-expected.txt: Added.
* platform/mac/svg/repaint/image-with-clip-path-expected.png: Added.
* svg/custom/relative-sized-image.xhtml: Added.
* svg/repaint/image-with-clip-path-expected.txt: Added.
* svg/repaint/image-with-clip-path.svg: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105613 268f45cc-cd09-0410-ab3c-d52691b4dbfc