Add hints for potential overlay promotion on android.

cc/ipc/transferable_resource_struct_traits.cc

Index: cc/ipc/transferable_resource_struct_traits.cc
diff --git a/cc/ipc/transferable_resource_struct_traits.cc b/cc/ipc/transferable_resource_struct_traits.cc
index da60d62323f1a150f3d35fbc45d8caea92f7c71f..b0f648ea83950579989805a4de1350345dc8332c 100644
--- a/cc/ipc/transferable_resource_struct_traits.cc
+++ b/cc/ipc/transferable_resource_struct_traits.cc
@@ -24,6 +24,10 @@ bool StructTraits<cc::mojom::TransferableResourceDataView,
   out->read_lock_fences_enabled = data.read_lock_fences_enabled();
   out->is_software = data.is_software();
   out->is_overlay_candidate = data.is_overlay_candidate();
+#if defined(OS_ANDROID)
+  out->is_backed_by_surface_texture = data.is_backed_by_surface_texture();
+  out->wants_promotion_hint = data.wants_promotion_hint();
+#endif
   return true;
 }