Part 2 of merges for Chromium bug #64589...

Part 2 of merges for Chromium bug #64589
Merge 73055 - 2010-11-30  Vangelis Kokkevis  <vangelis@chromium.org>;

        Reviewed by Darin Fisher.

        Get the value of the accelerated compositing triggers from the Settings
        class.  This allows setting the triggers via command line flags.
        https://bugs.webkit.org/show_bug.cgi?id=50301

        * public/WebSettings.h:
        * src/ChromeClientImpl.cpp:
        (WebKit::ChromeClientImpl::allowedCompositingTriggers):
        * src/WebSettingsImpl.cpp:
        (WebKit::WebSettingsImpl::setAcceleratedCompositingFor3DTransformsEnabled):
        (WebKit::WebSettingsImpl::setAcceleratedCompositingForVideoEnabled):
        (WebKit::WebSettingsImpl::setAcceleratedCompositingForPluginsEnabled):
        (WebKit::WebSettingsImpl::setAcceleratedCompositingForCanvasEnabled):
        (WebKit::WebSettingsImpl::setAcceleratedCompositingForAnimationEnabled):
        * src/WebSettingsImpl.h:
2010-11-30  Vangelis Kokkevis  <vangelis@chromium.org>;

        Reviewed by Darin Fisher.

        Adds accelerated compositing trigger flags to Settings to allow
        ports to set them via command line flags, etc.
        https://bugs.webkit.org/show_bug.cgi?id=50301

        * page/Settings.cpp:
        (WebCore::Settings::Settings):
        (WebCore::Settings::setAcceleratedCompositingFor3DTransformsEnabled):
        (WebCore::Settings::setAcceleratedCompositingForVideoEnabled):
        (WebCore::Settings::setAcceleratedCompositingForPluginsEnabled):
        (WebCore::Settings::setAcceleratedCompositingForCanvasEnabled):
        (WebCore::Settings::setAcceleratedCompositingForAnimationEnabled):
        * page/Settings.h:
        (WebCore::Settings::acceleratedCompositingFor3DTransformsEnabled):
        (WebCore::Settings::acceleratedCompositingForVideoEnabled):
        (WebCore::Settings::acceleratedCompositingForPluginsEnabled):
        (WebCore::Settings::acceleratedCompositingForCanvasEnabled):
        (WebCore::Settings::acceleratedCompositingForAnimationEnabled):


TBR=vangelis@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=73147