[chromium] Rollout r100751, this mechanism does not work and is very slow

[chromium] Rollout r100751, this mechanism does not work and is very slow
https://bugs.webkit.org/show_bug.cgi?id=77055

Unreviewed rollout of http://trac.webkit.org/changeset/100751. The refresh rate mechanism is not implemented,
but it still triggers a very slow codepath and triggers races on some platforms.

Patch by James Robinson <jamesr@chromium.org> on 2012-01-25

Source/WebCore:

* platform/PlatformScreen.h:
(WebCore):
* platform/chromium/PlatformScreenChromium.cpp:
* platform/chromium/PlatformSupport.h:
(PlatformSupport):
():
* platform/graphics/chromium/cc/CCLayerTreeHost.h:
(WebCore::CCSettings::CCSettings):
(CCSettings):
* platform/graphics/chromium/cc/CCThreadProxy.cpp:
(WebCore::CCThreadProxy::initializeImplOnImplThread):

Source/WebKit/chromium:

* public/WebScreenInfo.h:
(WebScreenInfo):
(WebKit::WebScreenInfo::WebScreenInfo):
* src/PlatformSupport.cpp:
* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::setIsAcceleratedCompositingActive):
* tests/CCLayerTreeHostTest.cpp:
(WTF::CCLayerTreeHostTest::runTest):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105961 268f45cc-cd09-0410-ab3c-d52691b4dbfc