Add Function.prototype.bind polyfill see #7951

Gruntfile.js

@@ -246,6 +246,7 @@ module.exports = function (grunt) {
                 specs : '<%= meta.specs %>',
                 /* Keep in sync with test/SpecRunner.html dependencies */
                 vendor : [
+                    'test/polyfills.js', /* For reference to why this polyfill is needed see Issue #7951. The need for this should go away once the version of phantomjs gets upgraded to 2.0 */
                     'src/thirdparty/jquery-2.1.0.min.js',
                     'src/thirdparty/CodeMirror2/lib/codemirror.js',
                     'src/thirdparty/CodeMirror2/lib/util/dialog.js',

test/polyfills.js

@@ -0,0 +1,25 @@
+(function () {
+    "use strict";
+
+    if (!Function.prototype.bind) {
+        Function.prototype.bind = function (oThis) {
+            if (typeof this !== "function") {
+                // closest thing possible to the ECMAScript 5
+                // internal IsCallable function
+                throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
+            }
+
+            var aArgs = Array.prototype.slice.call(arguments, 1),
+                fToBind = this,
+                FNOP = function () {},
+                fBound = function () {
+                    return fToBind.apply(this instanceof FNOP && oThis ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)));
+                };
+
+            FNOP.prototype = this.prototype;
+            fBound.prototype = new FNOP();
+
+            return fBound;
+        };
+    }
+}());