Adding touch screen funtionality to ChromeDriver (#2694)

* Adding touch screen funtionality to ChromeDriver

java/client/src/org/openqa/selenium/chrome/ChromeDriver.java

@@ -27,7 +27,10 @@
 import org.openqa.selenium.html5.LocationContext;
 import org.openqa.selenium.html5.SessionStorage;
 import org.openqa.selenium.html5.WebStorage;
+import org.openqa.selenium.interactions.HasTouchScreen;
+import org.openqa.selenium.interactions.TouchScreen;
 import org.openqa.selenium.remote.FileDetector;
+import org.openqa.selenium.remote.RemoteTouchScreen;
 import org.openqa.selenium.remote.RemoteWebDriver;
 import org.openqa.selenium.remote.html5.RemoteLocationContext;
 import org.openqa.selenium.remote.html5.RemoteWebStorage;
@@ -101,10 +104,11 @@
  * @see ChromeDriverService#createDefaultService
  */
 public class ChromeDriver extends RemoteWebDriver
-    implements LocationContext, WebStorage {
+    implements LocationContext, WebStorage, HasTouchScreen {
 
   private RemoteLocationContext locationContext;
   private RemoteWebStorage webStorage;
+  private TouchScreen touchScreen;
 
   /**
    * Creates a new ChromeDriver using the {@link ChromeDriverService#createDefaultService default}
@@ -170,6 +174,7 @@ public ChromeDriver(ChromeDriverService service, Capabilities capabilities) {
     super(new ChromeDriverCommandExecutor(service), capabilities);
     locationContext = new RemoteLocationContext(getExecuteMethod());
     webStorage = new  RemoteWebStorage(getExecuteMethod());
+    touchScreen = new RemoteTouchScreen(getExecuteMethod());
   }
 
   @Override
@@ -199,6 +204,11 @@ public void setLocation(Location location) {
     locationContext.setLocation(location);
   }
 
+  @Override
+  public TouchScreen getTouch() {
+    return touchScreen;
+  }
+
   /**
    * Launches Chrome app specified by id.
    *
@@ -207,4 +217,5 @@ public void setLocation(Location location) {
   public void launchApp(String id) {
     execute(ChromeDriverCommand.LAUNCH_APP, ImmutableMap.of("id", id));
   }
+
 }