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

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 64e20993ca10a46e7c92eb6d087680bb854c9d79..e23b65244d37423f4c25124c22112e5440601586 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -8,6 +8,7 @@
 #include <list>
 #include <set>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
@@ -56,6 +57,7 @@ class RenderPassDrawQuad;
 class RenderingStatsInstrumentation;
 class ResourcePool;
 class ScrollbarLayerImplBase;
+class SmoothnessTimingTracker;
 class TextureMailboxDeleter;
 class TopControlsManager;
 class UIResourceBitmap;
@@ -366,6 +368,9 @@ class CC_EXPORT LayerTreeHostImpl
   FrameRateCounter* fps_counter() {
     return fps_counter_.get();
   }
+  SmoothnessTimingTracker* smoothness_tracker() {
+    return smoothness_tracker_.get();
+  }
   PaintTimeCounter* paint_time_counter() {
     return paint_time_counter_.get();
   }
@@ -637,10 +642,13 @@ class CC_EXPORT LayerTreeHostImpl
   scoped_ptr<LayerTreeHostImplTimeSourceAdapter> time_source_client_adapter_;
 
   scoped_ptr<FrameRateCounter> fps_counter_;
+  scoped_ptr<SmoothnessTimingTracker> smoothness_tracker_;
   scoped_ptr<PaintTimeCounter> paint_time_counter_;
   scoped_ptr<MemoryHistory> memory_history_;
   scoped_ptr<DebugRectHistory> debug_rect_history_;
 
+  std::vector<std::pair<int, int64_t> > uncommitted_composite_ids_;
+
   scoped_ptr<TextureMailboxDeleter> texture_mailbox_deleter_;
 
   // The maximum memory that would be used by the prioritized resource