Move root layer management into the NonCompositedContentHost.
Have WebViewImpl create a NonCompositedContentHost explicitly.
https://bugs.webkit.org/show_bug.cgi?id=67883

Patch by Antoine Labour <piman@chromium.org> on 2011-09-14
Reviewed by James Robinson.

Source/WebCore:

Covered by compositing/ layout tests.

* platform/graphics/chromium/NonCompositedContentHost.cpp:
(WebCore::NonCompositedContentHost::setRootLayer):
(WebCore::NonCompositedContentHost::setViewport):
(WebCore::NonCompositedContentHost::setVisible):
(WebCore::NonCompositedContentHost::clearRenderSurfacesRecursive):
(WebCore::NonCompositedContentHost::invalidateRect):
* platform/graphics/chromium/NonCompositedContentHost.h:
(WebCore::NonCompositedContentHost::topLevelRootLayer):
* platform/graphics/chromium/cc/CCLayerTreeHost.cpp:
(WebCore::CCLayerTreeHost::create):
(WebCore::CCLayerTreeHost::CCLayerTreeHost):
(WebCore::CCLayerTreeHost::initialize):
(WebCore::CCLayerTreeHost::commitTo):
(WebCore::CCLayerTreeHost::didRecreateGraphicsContext):
(WebCore::CCLayerTreeHost::setViewport):
(WebCore::CCLayerTreeHost::setVisible):
(WebCore::CCLayerTreeHost::updateLayers):
(WebCore::CCLayerTreeHost::paintLayerContents):
* platform/graphics/chromium/cc/CCLayerTreeHost.h:
(WebCore::CCLayerTreeHost::rootLayer):

Source/WebKit/chromium:

* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::setRootGraphicsLayer):
(WebKit::WebViewImpl::invalidateRootLayerRect):
(WebKit::WebViewImpl::setIsAcceleratedCompositingActive):
(WebKit::WebViewImpl::updateLayerTreeViewport):
(WebKit::WebViewImpl::setVisibilityState):
* src/WebViewImpl.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@95152 268f45cc-cd09-0410-ab3c-d52691b4dbfc