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

cc/test/layer_tree_test.h

Index: cc/test/layer_tree_test.h
diff --git a/cc/test/layer_tree_test.h b/cc/test/layer_tree_test.h
index 8f38dda4999dd8648aac24224560414e7a49b2e8..0dc3d54b00c48dbf4357119fbabc133cd6abf367 100644
--- a/cc/test/layer_tree_test.h
+++ b/cc/test/layer_tree_test.h
@@ -5,6 +5,9 @@
 #ifndef CC_TEST_LAYER_TREE_TEST_H_
 #define CC_TEST_LAYER_TREE_TEST_H_
 
+#include <utility>
+#include <vector>
+
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread.h"
 #include "cc/animation/animation_delegate.h"
@@ -60,6 +63,8 @@ class TestHooks : public AnimationDelegate {
                                  base::TimeTicks monotonic_time) {}
   virtual void ApplyScrollAndScale(const gfx::Vector2d& scroll_delta,
                                    float scale) {}
+  virtual void RecordDrawTiming(int64_t rect_id,
+      const std::vector<std::pair<int, base::TimeTicks> >& draws) {}
   virtual void Animate(base::TimeTicks monotonic_time) {}
   virtual void WillBeginMainFrame() {}
   virtual void DidBeginMainFrame() {}