Implement service-side surface synchronization

cc/ipc/compositor_frame_metadata_struct_traits.h

Index: cc/ipc/compositor_frame_metadata_struct_traits.h
diff --git a/cc/ipc/compositor_frame_metadata_struct_traits.h b/cc/ipc/compositor_frame_metadata_struct_traits.h
index 318e198158fa0172d24f75abd2434b2b19f9d308..381edb3f45cdacd533a48d382940adfc1203f69c 100644
--- a/cc/ipc/compositor_frame_metadata_struct_traits.h
+++ b/cc/ipc/compositor_frame_metadata_struct_traits.h
@@ -106,6 +106,11 @@ struct StructTraits<cc::mojom::CompositorFrameMetadataDataView,
     return metadata.referenced_surfaces;
   }
 
+  static bool can_activate_before_dependencies(
+      const cc::CompositorFrameMetadata& metadata) {
+    return metadata.can_activate_before_dependencies;
+  }
+
   static bool Read(cc::mojom::CompositorFrameMetadataDataView data,
                    cc::CompositorFrameMetadata* out);
 };