Reviewed by Darin Fisher.

        Revert WebGL context attributes changes 33416 / r56074 and 36200 / r56093
        https://bugs.webkit.org/show_bug.cgi?id=36233

        The patch for bug 33416, which added multisampling support to the
        WebGL back buffer, uncovered some OpenGL driver bugs on the build
        bots which need further investigation to determine the appropriate
        workaround. Reverting this change, the minor build fix in 36189,
        and the skipping of the affected tests in bug 36200.

        Built and tested WebKit and Chromium and ran all WebGL layout
        tests in both.

        * src/GraphicsContext3D.cpp:
        (WebCore::GraphicsContext3DInternal::GraphicsContext3DInternal):
        (WebCore::GraphicsContext3DInternal::~GraphicsContext3DInternal):
        (WebCore::GraphicsContext3DInternal::reshape):
        (WebCore::GraphicsContext3DInternal::beginPaint):
        (WebCore::GraphicsContext3DInternal::bindFramebuffer):
        (WebCore::GraphicsContext3D::readPixels):
2010-03-17  Kenneth Russell  <kbr@google.com>

        Reviewed by Darin Fisher.

        Revert WebGL context attributes changes 33416 / r56074 and 36200 / r56093
        https://bugs.webkit.org/show_bug.cgi?id=36233

        The patch for bug 33416, which added multisampling support to the
        WebGL back buffer, uncovered some OpenGL driver bugs on the build
        bots which need further investigation to determine the appropriate
        workaround. Reverting this change, the minor build fix in 36189,
        and the skipping of the affected tests in bug 36200.

        Built and tested WebKit and Chromium and ran all WebGL layout
        tests in both.

        * bindings/v8/custom/V8HTMLCanvasElementCustom.cpp:
        (WebCore::V8HTMLCanvasElement::getContextCallback):
        * platform/graphics/GraphicsContext3D.h:
        * platform/graphics/mac/Canvas3DLayer.h:
        * platform/graphics/mac/Canvas3DLayer.mm:
        (-[Canvas3DLayer drawInCGLContext:pixelFormat:forLayerTime:displayTime:]):
        * platform/graphics/mac/GraphicsContext3DMac.cpp:
        (WebCore::GraphicsContext3D::GraphicsContext3D):
        (WebCore::GraphicsContext3D::~GraphicsContext3D):
        (WebCore::GraphicsContext3D::reshape):
        (WebCore::GraphicsContext3D::bindFramebuffer):
        (WebCore::GraphicsContext3D::readPixels):
        * platform/graphics/mac/GraphicsLayerCA.mm:
        (WebCore::GraphicsLayerCA::setContentsToGraphicsContext3D):
2010-03-17  Kenneth Russell  <kbr@google.com>

        Reviewed by Darin Fisher.

        Revert WebGL context attributes changes 33416 / r56074 and 36200 / r56093
        https://bugs.webkit.org/show_bug.cgi?id=36233

        The patch for bug 33416, which added multisampling support to the
        WebGL back buffer, uncovered some OpenGL driver bugs on the build
        bots which need further investigation to determine the appropriate
        workaround. Reverting this change, the minor build fix in 36189,
        and the skipping of the affected tests in bug 36200.

        Built and tested WebKit and Chromium and ran all WebGL layout
        tests in both.

        * fast/canvas/webgl/context-attributes-alpha-depth-stencil-antialias-expected.txt: Removed.
        * fast/canvas/webgl/context-attributes-alpha-depth-stencil-antialias.html: Removed.
        * fast/canvas/webgl/context-attributes-expected.txt:
        * fast/canvas/webgl/context-attributes.html:
        * fast/canvas/webgl/gl-get-calls-expected.txt:
        * fast/canvas/webgl/gl-get-calls.html:
        * platform/mac/Skipped:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@56127 268f45cc-cd09-0410-ab3c-d52691b4dbfc