cc : Split TransformTree::ComputeTransform

cc/trees/property_tree_builder.cc

Index: cc/trees/property_tree_builder.cc
diff --git a/cc/trees/property_tree_builder.cc b/cc/trees/property_tree_builder.cc
index 8df219660cf8daa71772fda69835ec3668245c93..10950d1746024baa0740440e89396d5b168b1195 100644
--- a/cc/trees/property_tree_builder.cc
+++ b/cc/trees/property_tree_builder.cc
@@ -569,8 +569,9 @@ bool AddTransformNodeIfNeeded(
     gfx::Vector2dF source_to_parent;
     if (source_index != parent_index) {
       gfx::Transform to_parent;
-      data_from_ancestor.property_trees->transform_tree.ComputeTransform(
-          source_index, parent_index, &to_parent);
+      data_from_ancestor.property_trees->transform_tree
+          .ComputeTransformFromSourceToParent(source_index, parent_index,
+                                              &to_parent);
       source_to_parent = to_parent.To2dTranslation();
     }
     layer->set_offset_to_transform_parent(source_offset + source_to_parent +