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

cc/trees/layer_tree_host_client.h

Index: cc/trees/layer_tree_host_client.h
diff --git a/cc/trees/layer_tree_host_client.h b/cc/trees/layer_tree_host_client.h
index 73ec892268983fff97569251edaa6ef0b0b4d628..2955c138802ef5505142488d102e5b3a5ea62100 100644
--- a/cc/trees/layer_tree_host_client.h
+++ b/cc/trees/layer_tree_host_client.h
@@ -5,6 +5,9 @@
 #ifndef CC_TREES_LAYER_TREE_HOST_CLIENT_H_
 #define CC_TREES_LAYER_TREE_HOST_CLIENT_H_
 
+#include <utility>
+#include <vector>
+
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
@@ -30,6 +33,12 @@ class LayerTreeHostClient {
   virtual void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
                                    float page_scale,
                                    float top_controls_delta) = 0;
+  virtual void RecordCommitTiming(
+      int64_t rect_id,
+      const std::pair<int, base::TimeTicks>& commit) = 0;
+  virtual void RecordCompositeTiming(
+      int64_t rect_id,
+      const std::vector<std::pair<int, base::TimeTicks> >& composites) = 0;
   // Creates an OutputSurface. If fallback is true, it should attempt to
   // create an OutputSurface that is guaranteed to initialize correctly.
   virtual scoped_ptr<OutputSurface> CreateOutputSurface(bool fallback) = 0;