Integration of the Skia displacement mapping into WebKit
https://bugs.webkit.org/show_bug.cgi?id=112927

Patch by Alexis Hetu <sugoi@chromium.org> on 2013-03-25
Reviewed by Stephen White.

Added displacement mapping to effect-reference.html and
effect-reference-hw.html

* WebCore.gypi:
* platform/graphics/filters/FEDisplacementMap.h:
(FEDisplacementMap):
Adding Skia specific declarations
* platform/graphics/filters/skia/FEDisplacementMapSkia.cpp: Added.
(WebCore):
(WebCore::toSkiaMode):
Provides conversion between the WebKit displacement mapping mode and
the Skia displacement mapping mode
(WebCore::FEDisplacementMap::platformApplySkia):
Displacement through the Skia API. (Accelerated only for now)
(WebCore::FEDisplacementMap::createImageFilter):
Displacement image filter creation through the Skia API.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146779 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Triage more test failures on content_shell

Unreviewed gardening.

* platform/chromium/ContentShellTestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146780 268f45cc-cd09-0410-ab3c-d52691b4dbfc