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

cc/layers/layer.h

Index: cc/layers/layer.h
diff --git a/cc/layers/layer.h b/cc/layers/layer.h
index 61ef3f8c3ac701b0b89f87fc74886a2189665774..890ab2802b4fae250ce17e6d7486acfaa866d605 100644
--- a/cc/layers/layer.h
+++ b/cc/layers/layer.h
@@ -7,6 +7,8 @@
 
 #include <set>
 #include <string>
+#include <utility>
+#include <vector>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
@@ -24,6 +26,7 @@
 #include "cc/layers/paint_properties.h"
 #include "cc/layers/render_surface.h"
 #include "cc/output/filter_operations.h"
+#include "cc/trees/layer_tree_host_impl.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
@@ -297,6 +300,11 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
     return touch_event_handler_region_;
   }
 
+  void SetSmoothnessTimingRequests(const SmoothnessTimingRequestsType& rects);
+  const SmoothnessTimingRequestsType& smoothness_timing_requests() const {
+    return smoothness_timing_requests_;
+  }
+
   void set_did_scroll_callback(const base::Closure& callback) {
     did_scroll_callback_ = callback;
   }
@@ -610,6 +618,7 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
   bool transform_is_invertible_ : 1;
   Region non_fast_scrollable_region_;
   Region touch_event_handler_region_;
+  SmoothnessTimingRequestsType smoothness_timing_requests_;
   gfx::PointF position_;
   SkColor background_color_;
   float opacity_;