Make plugins/plugin-reload-data.html deterministic

third_party/WebKit/LayoutTests/plugins/plugin-reload-data.html

Index: third_party/WebKit/LayoutTests/plugins/plugin-reload-data.html
diff --git a/third_party/WebKit/LayoutTests/plugins/plugin-reload-data.html b/third_party/WebKit/LayoutTests/plugins/plugin-reload-data.html
index d74c57d3d43d73a9a9f428b5942ff2b444353671..1b56990cf9bf4aa41dab9af2ca1a81d0df5c7357 100644
--- a/third_party/WebKit/LayoutTests/plugins/plugin-reload-data.html
+++ b/third_party/WebKit/LayoutTests/plugins/plugin-reload-data.html
@@ -7,7 +7,7 @@
         onload = () => {
             var object = document.querySelector("object");
             object.setAttribute("data", "data:text/plain,second");
-            requestAnimationFrame(() => { testRunner.notifyDone(); });
+            object.addEventListener("message", () => { testRunner.notifyDone(); });
         };
     } else {
         document.write("Needs to be run as a layout test.");