Merge 114800 - [chromium] Plumb a compositor surface ready notification through to the threaded com…

Merge 114800 - [chromium] Plumb a compositor surface ready notification through to the threaded compositor
https://bugs.webkit.org/show_bug.cgi?id=84305

Patch by James Robinson <jamesr@chromium.org>; on 2012-04-20
Reviewed by Adrienne Walker.

Source/Platform:

Add a notification for when the compositor surface associated with a given view is ready to use.

* chromium/public/WebLayerTreeView.h:
(WebLayerTreeView):

Source/WebCore:

Plumb setSurfaceReady through to the scheduler.

* platform/graphics/chromium/cc/CCLayerTreeHost.cpp:
(WebCore::CCLayerTreeHost::setSurfaceReady):
(WebCore):
* platform/graphics/chromium/cc/CCLayerTreeHost.h:
(CCLayerTreeHost):
* platform/graphics/chromium/cc/CCProxy.h:
(CCProxy):
* platform/graphics/chromium/cc/CCSingleThreadProxy.cpp:
(WebCore::CCSingleThreadProxy::setSurfaceReady):
(WebCore):
* platform/graphics/chromium/cc/CCSingleThreadProxy.h:
(CCSingleThreadProxy):
* platform/graphics/chromium/cc/CCThreadProxy.cpp:
(WebCore::CCThreadProxy::setSurfaceReady):
(WebCore):
(WebCore::CCThreadProxy::setSurfaceReadyOnImplThread):
(WebCore::CCThreadProxy::initializeImplOnImplThread):
* platform/graphics/chromium/cc/CCThreadProxy.h:
(CCThreadProxy):

Source/WebKit/chromium:

Adds a notification to WebWidget for when the compositor surface is ready to use. This exists to fix a race
condition when WebKit requires that we enter compositing mode but we haven't completed initialization of the
native window/etc backing the WebWidget, and we can't block for this initialization to complete without inducing
deadlocks. In this situation, we proceed as usual except that we can't attempt to use the compositor context or
it will fail.

* public/WebWidget.h:
(WebWidget):
* src/WebLayerTreeView.cpp:
(WebKit::WebLayerTreeView::setSurfaceReady):
(WebKit):
* src/WebPagePopupImpl.cpp:
(WebKit::WebPagePopupImpl::setCompositorSurfaceReady):
(WebKit):
* src/WebPagePopupImpl.h:
(WebPagePopupImpl):
* src/WebPopupMenuImpl.cpp:
(WebKit::WebPopupMenuImpl::setCompositorSurfaceReady):
(WebKit):
* src/WebPopupMenuImpl.h:
* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::setCompositorSurfaceReady):
(WebKit):
(WebKit::WebViewImpl::setIsAcceleratedCompositingActive):
* src/WebViewImpl.h:
(WebViewImpl):

TBR=jamesr@chromium.org
BUG=123356
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=114979