https://bugs.webkit.org/show_bug.cgi?id=70533

Reviewed by James Robinson.

Source/WebCore:

Unit test provided, must pass all existing GPU layout tests.

* WebCore.gypi:
* platform/graphics/chromium/cc/CCLayerImpl.cpp:
(WebCore::CCLayerImpl::appendQuads):
(WebCore::CCLayerImpl::quadTransform):
* platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp:
(WebCore::CCLayerTreeHostImpl::calculateRenderPasses):
(WebCore::CCLayerTreeHostImpl::optimizeRenderPasses):
(WebCore::CCLayerTreeHostImpl::drawLayers):
* platform/graphics/chromium/cc/CCLayerTreeHostImpl.h:
* platform/graphics/chromium/cc/CCQuadCuller.cpp: Added.
(std::swap):
(WebCore::regionContainsRect):
(WebCore::CCQuadCuller::cullOccludedQuads):
* platform/graphics/chromium/cc/CCQuadCuller.h: Added.
(WebCore::CCQuadCuller::CCQuadCuller):
* platform/graphics/chromium/cc/CCRenderPass.cpp:
(WebCore::CCRenderPass::optimizeQuads):
* platform/graphics/chromium/cc/CCRenderPass.h:

Source/WebKit/chromium:

* WebKit.gypi:
* tests/CCQuadCullerTest.cpp: Added.
(WebCore::TestDrawQuad::TestDrawQuad):
(WebCore::TestDrawQuad::create):
(WebCore::setQuads):
(WebCore::TEST):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@104368 268f45cc-cd09-0410-ab3c-d52691b4dbfc