https://bugs.webkit.org/show_bug.cgi?id=83960

Reviewed by Simon Fraser.

The local clip rect should not be used when calculating the bounds of a filter area. Otherwise
drop-shadow might not know about the pixels outside the clipping rectangle, even though the actual shadow might
be inside it.

No new tests added in this patch, but this patch fixes two existing tests that fail.
LayoutTests/css3/filters/filter-repaint-shadow-clipped.html
LayoutTests/css3/filters/filter-repaint-shadow-rotated.html

* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::paintLayerContents):
(WebCore::RenderLayer::calculateLayerBounds):
* rendering/RenderLayer.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114518 268f45cc-cd09-0410-ab3c-d52691b4dbfc