Add LatencyInfo support for Surfaces.

cc/surfaces/surface.h

Index: cc/surfaces/surface.h
diff --git a/cc/surfaces/surface.h b/cc/surfaces/surface.h
index 3d48196fc25076ea4448864709ebf3e68e5dcff8..600202e2f5aba8df7d9b8a4362b68725e4616b56 100644
--- a/cc/surfaces/surface.h
+++ b/cc/surfaces/surface.h
@@ -5,6 +5,8 @@
 #ifndef CC_SURFACES_SURFACE_H_
 #define CC_SURFACES_SURFACE_H_
 
+#include <vector>
+
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
@@ -13,6 +15,10 @@
 #include "cc/surfaces/surfaces_export.h"
 #include "ui/gfx/size.h"
 
+namespace ui {
+struct LatencyInfo;
+}
+
 namespace cc {
 class CompositorFrame;
 class CopyOutputRequest;
@@ -37,6 +43,7 @@ class CC_SURFACES_EXPORT Surface {
   // Returns a number that increments by 1 every time a new frame is enqueued.
   int frame_index() const { return frame_index_; }
 
+  void TakeLatencyInfo(std::vector<ui::LatencyInfo>* latency_info);
   void RunDrawCallbacks();
 
   SurfaceFactory* factory() { return factory_; }