diff -r 000000000000 -r 6474c204b198 dom/inputmethod/mochitest/inputmethod_common.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/inputmethod/mochitest/inputmethod_common.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+function inputmethod_setup(callback) {
+  SimpleTest.waitForExplicitFinish();
+  SimpleTest.requestCompleteLog();
+  let appInfo = SpecialPowers.Cc['@mozilla.org/xre/app-info;1']
+                .getService(SpecialPowers.Ci.nsIXULAppInfo);
+  if (appInfo.name != 'B2G') {
+    SpecialPowers.Cu.import("resource://gre/modules/Keyboard.jsm", this);
+  }
+
+  let permissions = [];
+  ['input-manage', 'browser'].forEach(function(name) {
+    permissions.push({
+      type: name,
+      allow: true,
+      context: document
+    });
+  });
+
+  SpecialPowers.pushPermissions(permissions, function() {
+    let prefs = [
+      ['dom.mozBrowserFramesEnabled', true],
+      // Enable navigator.mozInputMethod.
+      ['dom.mozInputMethod.enabled', true],
+      // Bypass the permission check for mozInputMethod API.
+      ['dom.mozInputMethod.testing', true]
+    ];
+    SpecialPowers.pushPrefEnv({set: prefs}, function() {
+      SimpleTest.waitForFocus(callback);
+    });
+  });
+}
+
+function inputmethod_cleanup() {
+  SimpleTest.finish();
+}