[chromium] Store origin/screen space transforms for surface and replica in the surface

[chromium] Store origin/screen space transforms for surface and replica in the surface
https://bugs.webkit.org/show_bug.cgi?id=81296

Patch by Dana Jansens <danakj@chromium.org> on 2012-03-20
Reviewed by Adrienne Walker.

Source/WebCore:

Compute and save a number of transforms for render surfaces. The origin
tranform for the replica into its target surface. The origin transform
for the replica into the screen. And the origin transform for the surface
into the screen.

These transforms will allow us to detect occlusion of render surfaces,
allowing us to cull (or partially-cull) the render surface quad during
drawing.

This also fixes a subtle bug in the transforms used by the damage
tracking code.

Unit test: CCLayerTreeHostCommonTest.verifyTransformsForSingleRenderSurface
           CCLayerTreeHostCommonTest.verifyTransformsForReplica
           CCLayerTreeHostCommonTest.verifyTransformsForRenderSurfaceHierarchy

* platform/graphics/chromium/RenderSurfaceChromium.h:
(WebCore::RenderSurfaceChromium::screenSpaceTransform):
(WebCore::RenderSurfaceChromium::setScreenSpaceTransform):
(RenderSurfaceChromium):
(WebCore::RenderSurfaceChromium::replicaOriginTransform):
(WebCore::RenderSurfaceChromium::setReplicaOriginTransform):
(WebCore::RenderSurfaceChromium::replicaScreenSpaceTransform):
(WebCore::RenderSurfaceChromium::setReplicaScreenSpaceTransform):
* platform/graphics/chromium/cc/CCDamageTracker.cpp:
(WebCore::CCDamageTracker::extendDamageForRenderSurface):
* platform/graphics/chromium/cc/CCLayerTreeHostCommon.cpp:
(WebCore::calculateDrawTransformsAndVisibilityInternal):
* platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp:
(WebCore::damageInSurfaceSpace):
* platform/graphics/chromium/cc/CCRenderSurface.h:
(WebCore::CCRenderSurface::setDrawTransform):
(WebCore::CCRenderSurface::drawTransform):
(WebCore::CCRenderSurface::setScreenSpaceTransform):
(WebCore::CCRenderSurface::screenSpaceTransform):
(CCRenderSurface):
(WebCore::CCRenderSurface::setReplicaDrawTransform):
(WebCore::CCRenderSurface::replicaDrawTransform):
(WebCore::CCRenderSurface::setReplicaOriginTransform):
(WebCore::CCRenderSurface::replicaOriginTransform):
(WebCore::CCRenderSurface::setReplicaScreenSpaceTransform):
(WebCore::CCRenderSurface::replicaScreenSpaceTransform):

Source/WebKit/chromium:

* tests/CCLayerTreeHostCommonTest.cpp:
(WebCore::TEST):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@111499 268f45cc-cd09-0410-ab3c-d52691b4dbfc