[cc] Make LayerImpls point at LayerTreeImpl instead of LTHI

cc/nine_patch_layer_impl.h

Index: cc/nine_patch_layer_impl.h
diff --git a/cc/nine_patch_layer_impl.h b/cc/nine_patch_layer_impl.h
index de757a2e938de0f5fbb7c9ceecb87b405c56cd74..6a103895080c36f29172a9c163176ec632af3074 100644
--- a/cc/nine_patch_layer_impl.h
+++ b/cc/nine_patch_layer_impl.h
@@ -19,9 +19,9 @@ namespace cc {
 
 class CC_EXPORT NinePatchLayerImpl : public LayerImpl {
 public:
-    static scoped_ptr<NinePatchLayerImpl> create(LayerTreeHostImpl* hostImpl, int id)
+    static scoped_ptr<NinePatchLayerImpl> create(LayerTreeImpl* treeImpl, int id)
     {
-        return make_scoped_ptr(new NinePatchLayerImpl(hostImpl, id));
+        return make_scoped_ptr(new NinePatchLayerImpl(treeImpl, id));
     }
     virtual ~NinePatchLayerImpl();
 
@@ -38,7 +38,7 @@ public:
     virtual base::DictionaryValue* layerTreeAsJson() const OVERRIDE;
 
 protected:
-    NinePatchLayerImpl(LayerTreeHostImpl* hostImpl, int id);
+    NinePatchLayerImpl(LayerTreeImpl* treeImpl, int id);
 
 private:
     virtual const char* layerTypeAsString() const OVERRIDE;