Bug 1076830 - Name the test function so it doesn't get GC'd. r=past

browser/devtools/debugger/test/doc_breakpoints-reload.html

@@ -6,7 +6,8 @@
   <title>Debugger Breakpoints Other Tabs Test Page</title>
 </head>
 <script>
-  (function () {
+  function theTest() {
     window.foo = "break on me";
-  }());
+  }
+  theTest();
 </script>