Reviewed by James Robinson.

        [chromium] Fix incorrect scissor rect for layers that render into a rendersurface
        https://bugs.webkit.org/show_bug.cgi?id=59020

        * compositing/flat-with-transformed-child-expected.txt: Added.
        * compositing/flat-with-transformed-child.html: Added.
        * platform/chromium-gpu-linux/compositing/flat-with-transformed-child-expected.checksum: Added.
        * platform/chromium-gpu-linux/compositing/flat-with-transformed-child-expected.png: Added.
        * platform/chromium/test_expectations.txt:
2011-05-04  Adrienne Walker  <enne@google.com>

        Reviewed by James Robinson.

        [chromium] Fix incorrect scissor rect for layers that render into a rendersurface
        https://bugs.webkit.org/show_bug.cgi?id=59020

        Allow for empty scissor rects, which implies scissoring to the render
        surface. The previous code and previous patch on this bug both didn't
        take into account that the scissor rect should be the render surface
        and not the projection of the layer itself, because child layers
        aren't necessarily contained within the bounds of their superlayer.

        Test: compositing/flat-with-transformed-child.html

        * platform/graphics/chromium/LayerRendererChromium.cpp:
        (WebCore::LayerRendererChromium::paintLayerContents):
        (WebCore::LayerRendererChromium::updatePropertiesAndRenderSurfaces):
        (WebCore::LayerRendererChromium::drawLayer):
        (WebCore::LayerRendererChromium::setScissorToRect):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@85959 268f45cc-cd09-0410-ab3c-d52691b4dbfc