Fix browser_save_video.js

browser/base/content/test/Makefile.in

@@ -212,6 +212,7 @@ _BROWSER_FILES = \
                  browser_clearplugindata_noage.html \
                  browser_popupUI.js \
                  browser_sanitizeDialog.js \
+                 browser_save_video.js \
                  bug564387.html \
                  bug564387_video1.ogv \
                  bug564387_video1.ogv^headers^ \

browser/base/content/test/browser_save_video.js

@@ -20,6 +20,7 @@ function test() {
       return;
     gBrowser.removeEventListener("pageshow", pageShown);
 
+    executeSoon(function () {
       document.addEventListener("popupshown", contextMenuOpened);
 
       var video1 = gBrowser.contentDocument.getElementById("video1");
@@ -27,6 +28,7 @@ function test() {
                                          { type: "contextmenu", button: 2 },
                                          gBrowser.contentWindow);
     });
+  });
 
   function contextMenuOpened(event) {
     event.currentTarget.removeEventListener("popupshown", contextMenuOpened);