browser.get('http://www.angularjs.org');
browser.addMockModule('moduleA', "angular.module('moduleA',[]).value('version','3');");

// To create a new browser.
var browser2 = browser.forkNewDriverInstance();

// To create a new browser with url as 'http://www.angularjs.org':
var browser3 = browser.forkNewDriverInstance(true);

// To create a new browser with mock modules injected:
var browser4 = browser.forkNewDriverInstance(false, true);

// To create a new browser with url as 
//'http://www.angularjs.org' and mock modules injected:
var browser4 = browser.forkNewDriverInstance(true, true);