[chromium] Use region reported painted opaque for draw culling

[chromium] Use region reported painted opaque for draw culling
https://bugs.webkit.org/show_bug.cgi?id=76015

Patch by Dana Jansens <danakj@chromium.org> on 2012-01-18
Reviewed by James Robinson.

Source/WebCore:

New unit tests in CCQuadCullerTest.cpp and CCTiledLayerImplTest.cpp

* platform/graphics/chromium/TiledLayerChromium.cpp:
(WebCore::TiledLayerChromium::pushPropertiesTo):
(WebCore::TiledLayerChromium::prepareToUpdateTiles):
* platform/graphics/chromium/cc/CCDrawQuad.h:
(WebCore::CCDrawQuad::opaqueRect):
(WebCore::CCDrawQuad::needsBlending):
* platform/graphics/chromium/cc/CCQuadCuller.cpp:
(WebCore::CCQuadCuller::cullOccludedQuads):
* platform/graphics/chromium/cc/CCTileDrawQuad.cpp:
(WebCore::CCTileDrawQuad::create):
(WebCore::CCTileDrawQuad::CCTileDrawQuad):
* platform/graphics/chromium/cc/CCTileDrawQuad.h:
* platform/graphics/chromium/cc/CCTiledLayerImpl.cpp:
(WebCore::DrawableTile::opaqueRect):
(WebCore::DrawableTile::setOpaqueRect):
(WebCore::CCTiledLayerImpl::appendQuads):
(WebCore::CCTiledLayerImpl::pushTileProperties):
* platform/graphics/chromium/cc/CCTiledLayerImpl.h:

Source/WebKit/chromium:

* tests/CCQuadCullerTest.cpp:
(WebCore::TestDrawQuad::TestDrawQuad):
(WebCore::TestDrawQuad::create):
(WebCore::setQuads):
(WebCore::TEST):
* tests/CCTiledLayerImplTest.cpp:
(WebCore::createLayer):
(WebCore::TEST):
(WebCore::getQuads):
(WebCore::coverageVisibleRectOnTileBoundaries):
(WebCore::coverageVisibleRectIntersectsTiles):
(WebCore::coverageVisibleRectIntersectsBounds):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105366 268f45cc-cd09-0410-ab3c-d52691b4dbfc