Reviewed by James Robinson.

        Add setting to always force compositing mode
        https://bugs.webkit.org/show_bug.cgi?id=56156

        No new tests needed as this defaults to disabled (and is unfeasible
        to be tested through property overriding at runtime).

        * page/Settings.h:
        (WebCore::Settings::setForceCompositingMode):
        (WebCore::Settings::forceCompositingMode):
        * rendering/RenderLayerCompositor.cpp:
        (WebCore::RenderLayerCompositor::RenderLayerCompositor):
        (WebCore::RenderLayerCompositor::computeCompositingRequirements):
        * rendering/RenderLayerCompositor.h:
2011-03-16  Daniel Sievers  <sievers@google.com>

        Reviewed by James Robinson.

        Add setting to always force compositing mode
        https://bugs.webkit.org/show_bug.cgi?id=56156

        * public/WebSettings.h:
        * src/WebSettingsImpl.cpp:
        (WebKit::WebSettingsImpl::setForceCompositingMode):
        * src/WebSettingsImpl.h:
2011-03-16  Daniel Sievers  <sievers@google.com>

        Reviewed by James Robinson.

        Add setting to always force compositing mode
        https://bugs.webkit.org/show_bug.cgi?id=56156

        * DumpRenderTree/chromium/DumpRenderTree.cpp:
        (main):
        * DumpRenderTree/chromium/TestShell.cpp:
        (TestShell::TestShell):
        (TestShell::resetWebSettings):
        * DumpRenderTree/chromium/TestShell.h:
        (TestShell::setForceCompositingMode):
        * DumpRenderTree/chromium/WebPreferences.cpp:
        (WebPreferences::reset):
        (WebPreferences::applyTo):
        * DumpRenderTree/chromium/WebPreferences.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@81289 268f45cc-cd09-0410-ab3c-d52691b4dbfc