[not for review] Add Draw entries to window Performance Timeline

cc/test/layer_tree_test.cc

Index: cc/test/layer_tree_test.cc
diff --git a/cc/test/layer_tree_test.cc b/cc/test/layer_tree_test.cc
index d72860d81cef30e481f98738ed2115c79b8fcb23..95dfb9de30816639847e6d849fd4a77e44229cc2 100644
--- a/cc/test/layer_tree_test.cc
+++ b/cc/test/layer_tree_test.cc
@@ -287,6 +287,11 @@ class LayerTreeHostClientForTesting : public LayerTreeHostClient,
     test_hooks_->ApplyScrollAndScale(scroll_delta, scale);
   }
 
+  virtual void RecordDrawTiming(int64_t rect_id,
+      const std::vector<std::pair<int, base::TimeTicks> >& draws) OVERRIDE {
+    test_hooks_->RecordDrawTiming(rect_id, draws);
+  }
+
   virtual scoped_ptr<OutputSurface> CreateOutputSurface(bool fallback)
       OVERRIDE {
     return test_hooks_->CreateOutputSurface(fallback);