fixing test bustage from restrictions imposed by bug 292789 (chrome://mochikit needs contentaccessible=yes). r=gavin

testing/mochitest/runtests.pl.in

@@ -529,7 +529,7 @@ CHROMEEND
   my $manifest = $directories . "chrome/mochikit.manifest";
   open(MANIFEST, ">$manifest") ||
     die("Could not open manifest file $!");
-  print MANIFEST ("content mochikit $chrometest_dir\n");
+  print MANIFEST ("content mochikit $chrometest_dir contentaccessible=yes\n");
   if ($do_browser_tests) {
     print MANIFEST ("overlay " . BROWSER_CHROME_URL . " chrome://mochikit/content/browser-test-overlay.xul\n");
   }

testing/mochitest/runtests.py.in

@@ -474,7 +474,7 @@ toolbar#nav-bar {
   (path, leaf) = os.path.split(options.app)
   manifest = path + "/" + "chrome/mochikit.manifest"
   manifestFile = open(manifest, "w")
-  manifestFile.write("content mochikit " + chrometestDir + "\n")
+  manifestFile.write("content mochikit " + chrometestDir + " contentaccessible=yes\n")
   if options.browserChrome:
     overlayLine = "overlay " + BROWSER_CHROME_URL + " " \
                   "chrome://mochikit/content/browser-test-overlay.xul\n"