Bug 825527 - Part 1: Look through an Xray wrapper at our images in tests so that we always see the QueryInterface method on them; r=bzbarsky

image/test/mochitest/imgutils.js

@@ -36,7 +36,7 @@ function getImageStatus(id)
   netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
 
   // Get the image
-  var img = document.getElementById(id);
+  var img = SpecialPowers.wrap(document.getElementById(id));
 
   // QI the image to nsImageLoadingContent
   img.QueryInterface(SpecialPowers.Ci.nsIImageLoadingContent);

image/test/mochitest/test_bug614392.html

@@ -22,7 +22,7 @@ SimpleTest.waitForExplicitFinish();
 
 window.onload = function() {
   netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
-  var img = document.getElementsByTagName("img")[0];
+  var img = SpecialPowers.wrap(document.getElementsByTagName("img")[0]);
   var container = img
       .QueryInterface(Components.interfaces.nsIImageLoadingContent)
       .getRequest(Components.interfaces.nsIImageLoadingContent.CURRENT_REQUEST)