https://bugs.webkit.org/show_bug.cgi?id=90325

Patch by Brian Anderson <brianderson@chromium.org> on 2012-07-23
Reviewed by Kenneth Russell.

Source/Platform:

Adds shallowFlushCHROMIUM to WebGraphicsContext3D.

* chromium/public/WebGraphicsContext3D.h:
(WebGraphicsContext3D):
(WebKit::WebGraphicsContext3D::shallowFlushCHROMIUM):

Source/WebCore:

Adds plumbing for the shallowFlushCHROMIUM extension and uses
shallow flushes instead of normal flushes when uploading textures.
Shallow flushes allow us to initiate command buffer flushes to
the GPU thread/process without the overhead of a true glFlush.

CCTextureUpdaterTest updated to recognize shallow flushes.

* platform/chromium/support/Extensions3DChromium.cpp:
(WebCore::Extensions3DChromium::shallowFlushCHROMIUM):
(WebCore):
* platform/graphics/chromium/Extensions3DChromium.h:
(Extensions3DChromium):
* platform/graphics/chromium/cc/CCGraphicsContext.h:
* platform/graphics/chromium/cc/CCResourceProvider.cpp:
(WebCore::CCResourceProvider::shallowFlushIfSupported):
(WebCore):
(WebCore::CCResourceProvider::CCResourceProvider):
(WebCore::CCResourceProvider::initialize):
* platform/graphics/chromium/cc/CCResourceProvider.h:
(CCResourceProvider):
* platform/graphics/chromium/cc/CCTextureUpdater.cpp:
(WebCore::CCTextureUpdater::update):

Source/WebKit/chromium:

Changed CCTextureUpdaterTest to recognize shallowFlushCHROMIUM().

* tests/CCTextureUpdaterTest.cpp:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@123416 268f45cc-cd09-0410-ab3c-d52691b4dbfc