Deserialize frame_token in CompositorFrameMetadata's struct traits

cc/ipc/compositor_frame_metadata_struct_traits.cc

Index: cc/ipc/compositor_frame_metadata_struct_traits.cc
diff --git a/cc/ipc/compositor_frame_metadata_struct_traits.cc b/cc/ipc/compositor_frame_metadata_struct_traits.cc
index bc0d07d1282e248579eb4ff2dfdba54cda108023..fae339a87f72556a1d88da2e103f8e695a243848 100644
--- a/cc/ipc/compositor_frame_metadata_struct_traits.cc
+++ b/cc/ipc/compositor_frame_metadata_struct_traits.cc
@@ -38,7 +38,7 @@ bool StructTraits<cc::mojom::CompositorFrameMetadataDataView,
   out->bottom_controls_height = data.bottom_controls_height();
   out->bottom_controls_shown_ratio = data.bottom_controls_shown_ratio();
   out->content_source_id = data.content_source_id();
-
+  out->frame_token = data.frame_token();
   out->root_background_color = data.root_background_color();
   out->can_activate_before_dependencies =
       data.can_activate_before_dependencies();