Add the ubercomp DelegatedRendererLayer.

cc/CCLayerImpl.h

Index: cc/CCLayerImpl.h
diff --git a/cc/CCLayerImpl.h b/cc/CCLayerImpl.h
index 459b76f93062b55d281d083f5b94d70e9c4067eb..ea6582ed2ab2d5505a25a25715a3a9000684826a 100644
--- a/cc/CCLayerImpl.h
+++ b/cc/CCLayerImpl.h
@@ -7,6 +7,7 @@
 
 #include "CCInputHandler.h"
 #include "CCLayerAnimationController.h"
+#include "CCRenderPass.h"
 #include "CCRenderSurface.h"
 #include "CCResourceProvider.h"
 #include "CCSharedQuadState.h"
@@ -81,6 +82,10 @@ public:
 
     virtual CCResourceProvider::ResourceId contentsResourceId() const;
 
+    virtual bool hasContributingDelegatedRenderPasses() const { return false; }
+    virtual CCRenderPass::Id firstContributingRenderPassId() const { return CCRenderPass::Id(0, 0); }
+    virtual CCRenderPass::Id nextContributingRenderPassId(CCRenderPass::Id) const { return CCRenderPass::Id(0, 0); }
+
     // Returns true if this layer has content to draw.
     void setDrawsContent(bool);
     bool drawsContent() const { return m_drawsContent; }
@@ -89,7 +94,7 @@ public:
     void setForceRenderSurface(bool force) { m_forceRenderSurface = force; }
 
     // Returns true if any of the layer's descendants has content to draw.
-    bool descendantDrawsContent();
+    virtual bool descendantDrawsContent();
 
     void setAnchorPoint(const FloatPoint&);
     const FloatPoint& anchorPoint() const { return m_anchorPoint; }