[chromium] Remove dead compositor-related API from GraphicsContext3DPrivate / Extensi...

[chromium] Remove dead compositor-related API from GraphicsContext3DPrivate / Extensions3DChromium
https://bugs.webkit.org/show_bug.cgi?id=89933

Patch by James Robinson <jamesr@chromium.org> on 2012-06-26
Reviewed by Kenneth Russell.

Source/WebCore:

GraphicsContext3DPrivate and Extensions3DChromium had a fair amount of plumbing and boilerplate to support the
compositor's use of GraphicsContext3D. A number of extensions, etc, only make sense for a compositor context.
Since the compositor doesn't use GC3D any more, these are no longer needed.

* platform/chromium/support/Extensions3DChromium.cpp:
* platform/chromium/support/GraphicsContext3DChromium.cpp:
(WebCore::GraphicsContext3D::~GraphicsContext3D):
(WebCore::GraphicsContext3D::create):
* platform/chromium/support/GraphicsContext3DPrivate.cpp:
(WebCore::GraphicsContext3DPrivate::~GraphicsContext3DPrivate):
(WebCore::GraphicsContext3DPrivate::createGraphicsContextFromWebContext):
(WebCore::GrMemoryAllocationChangedCallbackAdapter::GrMemoryAllocationChangedCallbackAdapter):
(WebCore::GraphicsContext3DPrivate::grContext):
* platform/chromium/support/GraphicsContext3DPrivate.h:
(WebCore):
(GraphicsContext3DPrivate):
* platform/graphics/chromium/Extensions3DChromium.h:

Source/WebKit/chromium:

* tests/Canvas2DLayerBridgeTest.cpp:
(Canvas2DLayerBridgeTest::fullLifecycleTest):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121268 268f45cc-cd09-0410-ab3c-d52691b4dbfc