Mozart: Implement hit testing.

mojo/services/gfx/composition/cpp/formatting.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/services/gfx/composition/cpp/formatting.h"
 
 #include <ostream>
 
 namespace mojo {
 namespace gfx {
@@ skipping 222 matching lines @@
 
 std::ostream& operator<<(std::ostream& os,
                          const mojo::gfx::composition::SceneHit& value) {
   return os << "{scene_token=" << value.scene_token
             << ", scene_version=" << value.scene_version
             << ", hits=" << value.hits << "}";
 }
 
 std::ostream& operator<<(std::ostream& os,
                          const mojo::gfx::composition::NodeHit& value) {
-  return os << "{node_id=" << value.node_id
-            << ", intersection=" << value.intersection << "}";
+  return os << "{node_id=" << value.node_id << ", transform=" << value.transform
+            << "}";
 }
 
 }  // namespace composition
 }  // namespace gfx
 }  // namespace mojo