Plumb cc::LatencyInfo through command buffer and output surface

cc/output/compositor_frame_metadata.h

Index: cc/output/compositor_frame_metadata.h
diff --git a/cc/output/compositor_frame_metadata.h b/cc/output/compositor_frame_metadata.h
index 3aedb9e59a6569157b3b4c7d718b4c4025246e87..55ee9dadc0edfc17d30d22816d205e56925c51c4 100644
--- a/cc/output/compositor_frame_metadata.h
+++ b/cc/output/compositor_frame_metadata.h
@@ -6,6 +6,7 @@
 #define CC_OUTPUT_COMPOSITOR_FRAME_METADATA_H_
 
 #include "cc/base/cc_export.h"
+#include "cc/debug/latency_info.h"
 #include "ui/gfx/size_f.h"
 #include "ui/gfx/vector2d_f.h"
 
@@ -36,6 +37,8 @@ class CC_EXPORT CompositorFrameMetadata {
   gfx::Vector2dF location_bar_offset;
   gfx::Vector2dF location_bar_content_translation;
   float overdraw_bottom_height;
+
+  LatencyInfo latency_info;
 };
 
 }  // namespace cc