[Chromoting] Decouple DesktopView and TouchInputHandler

remoting/android/java/src/org/chromium/chromoting/DesktopViewInterface.java

Index: remoting/android/java/src/org/chromium/chromoting/DesktopViewInterface.java
diff --git a/remoting/android/java/src/org/chromium/chromoting/DesktopViewInterface.java b/remoting/android/java/src/org/chromium/chromoting/DesktopViewInterface.java
index 41a29c178b6d75148e2da337488bbd3feeb9c8c6..4bca96aba3a8f441574d710489d8db80f6d83c27 100644
--- a/remoting/android/java/src/org/chromium/chromoting/DesktopViewInterface.java
+++ b/remoting/android/java/src/org/chromium/chromoting/DesktopViewInterface.java
@@ -6,10 +6,18 @@ package org.chromium.chromoting;
 
 import android.graphics.Point;
 
+import org.chromium.chromoting.jni.Client;
+
 /**
  * Callback interface to allow the TouchInputHandler to request actions on the DesktopView.
  */
 public interface DesktopViewInterface {
+    /**
+     * Initializes the instance. Implementations can assume this function will be called exactly
+     * once after constructor but before other functions.
+     */
+    void init(Desktop desktop, Client client);
+
     /** Triggers a brief animation to indicate the existence and location of an input event. */
     void showInputFeedback(DesktopView.InputFeedbackType feedbackToShow, Point pos);