Selenium FirefoxDriver with proxy configured profile

DriverConfig.java

import static java.lang.String.format;

import java.net.URL;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxProfile;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class DriverConfig {

    // Change these for your values.
    private static String proxyHost = "";
    private static int proxyPort = 0;
    private static String ignoreProxy = "localhost, 127.0.0.1";
    private static String seleniumGridHubHost = "localhost";

    /**
     * Firefox preference value for specifying Manual Proxy configuration.
     */
    private static final int MANUAL_PROXY_CONFIG = 1;

    public static WebDriver localFirefox() {

        FirefoxProfile profile = createProfile();

        return new FirefoxDriver(profile);
    }

    private static FirefoxProfile createProfile() {
        FirefoxProfile profile = new FirefoxProfile();

        // Use native events on all platforms
        profile.setEnableNativeEvents(true);

        boolean useProxy = !proxyHost.isEmpty();

        if (useProxy) {
            // Configures the same proxy for all variants
            profile.setPreference("network.proxy.type", MANUAL_PROXY_CONFIG);
            profile.setPreference("network.proxy.http", proxyHost);
            profile.setPreference("network.proxy.http_port", proxyPort);
            profile.setPreference("network.proxy.ssl", proxyHost);
            profile.setPreference("network.proxy.ssl_port", proxyPort);
            profile.setPreference("network.proxy.socks", proxyHost);
            profile.setPreference("network.proxy.socks_port", proxyPort);
            profile.setPreference("network.proxy.ftp", proxyHost);
            profile.setPreference("network.proxy.ftp_port", proxyPort);
            profile.setPreference("network.proxy.no_proxies_on", ignoreProxy);
        }
        return profile;
    }

    public static WebDriver remoteFirefox() throws Exception {
        DesiredCapabilities capabilities = DesiredCapabilities.firefox();

        capabilities.setCapability(FirefoxDriver.PROFILE, createProfile());

        URL remoteAddress = new URL(format("http://%s:4444/wd/hub/", seleniumGridHubHost));
        // Remote Driver, e.g. on a VM
        RemoteWebDriver driver = new RemoteWebDriver(remoteAddress, capabilities);

        return driver;
    }
}

DriverConfigTest.java

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;

public class DriverConfigTest {

    private WebDriver firefox;

    @Before
    public void createDriver() {
        firefox = DriverConfig.localFirefox();

    }

    @After
    public void destroyDriver() {
        firefox.quit();
    }

    @Test
    public void test() {

        firefox.navigate().to("http://www.google.com.au");

        // Find the search box
        firefox.findElement(By.tagName("input"));

    }

}