[cc] Make LayerImpls point at LayerTreeImpl instead of LTHI

cc/delegated_renderer_layer_impl.h

Index: cc/delegated_renderer_layer_impl.h
diff --git a/cc/delegated_renderer_layer_impl.h b/cc/delegated_renderer_layer_impl.h
index 8ee0f9fff61811895f9a0bbbea624321cf60e18a..6fbb02646a5bb0274f8423ed5677bced27e8a658 100644
--- a/cc/delegated_renderer_layer_impl.h
+++ b/cc/delegated_renderer_layer_impl.h
@@ -13,7 +13,7 @@ namespace cc {
 
 class CC_EXPORT DelegatedRendererLayerImpl : public LayerImpl {
 public:
-    static scoped_ptr<DelegatedRendererLayerImpl> create(LayerTreeHostImpl* hostImpl, int id) { return make_scoped_ptr(new DelegatedRendererLayerImpl(hostImpl, id)); }
+    static scoped_ptr<DelegatedRendererLayerImpl> create(LayerTreeImpl* treeImpl, int id) { return make_scoped_ptr(new DelegatedRendererLayerImpl(treeImpl, id)); }
     virtual ~DelegatedRendererLayerImpl();
 
     virtual int descendantsDrawContent() OVERRIDE;
@@ -32,7 +32,7 @@ public:
     virtual void appendQuads(QuadSink&, AppendQuadsData&) OVERRIDE;
 
 private:
-    DelegatedRendererLayerImpl(LayerTreeHostImpl* hostImpl, int id);
+    DelegatedRendererLayerImpl(LayerTreeImpl* treeImpl, int id);
 
     RenderPass::Id convertDelegatedRenderPassId(RenderPass::Id delegatedRenderPassId) const;