Add CCDelegatingRenderer, and corresponding IPCs

cc/TreeSynchronizer.cpp

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "TreeSynchronizer.h"
 
 #include "CCLayerImpl.h"
 #include "CCScrollbarAnimationController.h"
@@ skipping 55 matching lines @@
     OwnPtr<CCLayerImpl> ccLayerImpl = reuseOrCreateCCLayerImpl(newLayers, oldLayers, layer);
 
     ccLayerImpl->clearChildList();
     const Vector<RefPtr<LayerChromium> >& children = layer->children();
     for (size_t i = 0; i < children.size(); ++i)
         ccLayerImpl->addChild(synchronizeTreeRecursive(newLayers, oldLayers, children[i].get(), hostImpl));
 
     ccLayerImpl->setMaskLayer(synchronizeTreeRecursive(newLayers, oldLayers, layer->maskLayer(), hostImpl));
     ccLayerImpl->setReplicaLayer(synchronizeTreeRecursive(newLayers, oldLayers, layer->replicaLayer(), hostImpl));
 
+    ccLayerImpl->setLayerTreeHostImpl(hostImpl);
     layer->pushPropertiesTo(ccLayerImpl.get());
-    ccLayerImpl->setLayerTreeHostImpl(hostImpl);
 
     // Remove all dangling pointers. The pointers will be setup later in updateScrollbarLayerPointersRecursive phase
     if (CCScrollbarAnimationController* scrollbarController = ccLayerImpl->scrollbarAnimationController()) {
         scrollbarController->setHorizontalScrollbarLayer(0);
         scrollbarController->setVerticalScrollbarLayer(0);
     }
 
     return ccLayerImpl.release();
 }
 
@@ skipping 15 matching lines @@
     CCLayerImpl* ccScrollLayerImpl = newLayers.get(scrollbarLayer->scrollLayerId());
     ASSERT(ccScrollLayerImpl);
 
     if (ccScrollbarLayerImpl->orientation() == WebKit::WebScrollbar::Horizontal)
         ccScrollLayerImpl->setHorizontalScrollbarLayer(ccScrollbarLayerImpl);
     else
         ccScrollLayerImpl->setVerticalScrollbarLayer(ccScrollbarLayerImpl);
 }
 
 } // namespace cc