Fixed host_controller_unittest.js with code coverage enabled.

remoting/webapp/crd/js/host_controller_unittest.js

Index: remoting/webapp/crd/js/host_controller_unittest.js
diff --git a/remoting/webapp/crd/js/host_controller_unittest.js b/remoting/webapp/crd/js/host_controller_unittest.js
index f65dc975050fb51012c3b330c5e8a0b189136d60..bddbbf47901b318d6c211ad8a6d27e0dbec2a007 100644
--- a/remoting/webapp/crd/js/host_controller_unittest.js
+++ b/remoting/webapp/crd/js/host_controller_unittest.js
@@ -75,6 +75,7 @@ QUnit.module('host_controller', {
   beforeEach: function(/** QUnit.Assert */ assert) {
     chromeMocks.activate(['identity', 'runtime']);
     chromeMocks.identity.mock$setToken(FAKE_IDENTITY_TOKEN);
+    remoting.settings = new remoting.Settings();
     remoting.identity = new remoting.Identity();
     remoting.MockXhr.activate();
     base.debug.assert(remoting.oauth2 === null);