[Chromoting] Add InputInjector and InputInjectorWrapper for easy unittesting

remoting/android/java/src/org/chromium/chromoting/cardboard/DesktopActivity.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromoting.cardboard;
 
 import android.content.Intent;
 import android.graphics.PointF;
 import android.os.Bundle;
 import android.speech.RecognitionListener;
 import android.speech.RecognizerIntent;
 import android.speech.SpeechRecognizer;
 
 import com.google.vrtoolkit.cardboard.CardboardActivity;
 import com.google.vrtoolkit.cardboard.CardboardView;
 
+import org.chromium.chromoting.InputStub;
 import org.chromium.chromoting.R;
-import org.chromium.chromoting.TouchInputHandler;
 import org.chromium.chromoting.jni.Client;
 
 import java.util.ArrayList;
 
 /**
  * Virtual desktop activity for Cardboard.
  */
 public class DesktopActivity extends CardboardActivity {
     // Flag to indicate whether the current activity is going to switch to normal
     // desktop activity.
@@ skipping 44 matching lines @@
                         mRenderer.moveAwayFromDesktop();
                         break;
                 }
             } else {
                 mRenderer.setMenuBarVisible(false);
             }
         } else {
             if (mRenderer.isLookingAtDesktop()) {
                 PointF coordinates = mRenderer.getMouseCoordinates();
                 mClient.sendMouseEvent((int) coordinates.x, (int) coordinates.y,
-                        TouchInputHandler.BUTTON_LEFT, true);
+                        InputStub.BUTTON_LEFT, true);
                 mClient.sendMouseEvent((int) coordinates.x, (int) coordinates.y,
-                        TouchInputHandler.BUTTON_LEFT, false);
+                        InputStub.BUTTON_LEFT, false);
             } else {
                 if (mRenderer.isLookingFarawayFromDesktop()) {
                     getCardboardView().resetHeadTracker();
                 } else {
                     mRenderer.setMenuBarVisible(true);
                 }
             }
         }
     }
 
@@ skipping 98 matching lines @@
             }
         }
 
         public void onPartialResults(Bundle partialResults) {
         }
 
         public void onEvent(int eventType, Bundle params) {
         }
     }
 }