cc: Compute RenderSurfaceImpl's TransformTreeIndex using its effect node

cc/trees/draw_property_utils.cc

Index: cc/trees/draw_property_utils.cc
diff --git a/cc/trees/draw_property_utils.cc b/cc/trees/draw_property_utils.cc
index 9251beff1996c91d2f706f0f0af62bc3ecaffe9a..4bcac30527fcf7ef9845349a1ed5d40e27116812 100644
--- a/cc/trees/draw_property_utils.cc
+++ b/cc/trees/draw_property_utils.cc
@@ -1278,7 +1278,7 @@ static void SetSurfaceDrawTransform(const PropertyTrees* property_trees,
   const EffectNode* effect_node =
       effect_tree.Node(render_surface->EffectTreeIndex());
   // The draw transform of root render surface is identity tranform.
-  if (transform_node->id == 1) {
+  if (transform_node->id == TransformTree::kRootNodeId) {
     render_surface->SetDrawTransform(gfx::Transform());
     return;
   }