WebTestProxy should animate the page popup

content/shell/renderer/test_runner/web_test_proxy.cc

Index: content/shell/renderer/test_runner/web_test_proxy.cc
diff --git a/content/shell/renderer/test_runner/web_test_proxy.cc b/content/shell/renderer/test_runner/web_test_proxy.cc
index 7a3f71bdbf36c75b715acc62de053423b66b8795..1be624096bd70e6fc57b8fb6abecc8afc8a5c706 100644
--- a/content/shell/renderer/test_runner/web_test_proxy.cc
+++ b/content/shell/renderer/test_runner/web_test_proxy.cc
@@ -689,6 +689,10 @@ void WebTestProxyBase::AnimateNow() {
     animate_scheduled_ = false;
     web_widget_->animate(0.0);
     web_widget_->layout();
+    if (blink::WebPagePopup* popup = web_widget_->pagePopup()) {
+      popup->animate(0.0);
+      popup->layout();
+    }
   }
 }