//http://testeimporta.blogspot.com.br/2015/04/referencia-de-emulacao-do-chrome-no.html

//imports
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.remote.DesiredCapabilities;

import javax.swing.*;
import java.util.HashMap;
import java.util.Map;


//metodo de teste
@Test
    public void testEmulation(){
        Map<String, String> mobileEmulation = new HashMap<String, String>();

        mobileEmulation.put("deviceName", "Samsung Galaxy Tab");

        Map<String, Object> chromeOptions = new HashMap<String, Object>();

        chromeOptions.put("mobileEmulation", mobileEmulation);

        DesiredCapabilities capabilities = DesiredCapabilities.chrome();

        capabilities.setCapability(ChromeOptions.CAPABILITY, chromeOptions);

        WebDriver driver = new ChromeDriver(capabilities);

        driver.navigate().to("http://www.google.com.br/");

        JOptionPane.showMessageDialog(null, "emule");
    }