Use scan codes when sending keyboard events froms physical keyboard.

remoting/android/java/src/org/chromium/chromoting/jni/JniInterface.java

 // Copyright 2013 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.jni;
 
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Point;
 import android.os.Looper;
@@ skipping 268 matching lines @@
         if (!sConnected) {
             return;
         }
 
         nativeSendMouseWheelEvent(deltaX, deltaY);
     }
 
     /** Passes mouse-wheel information to the native handling code. */
     private static native void nativeSendMouseWheelEvent(int deltaX, int deltaY);
 
-    /** Presses or releases the specified (nonnegative) key. Called on the UI thread. */
-    public static boolean sendKeyEvent(int keyCode, boolean keyDown) {
+    /**
+     * Presses or releases the specified (nonnegative) key. Called on the UI thread. If scanCode
+     * is not zero then keyCode is ignored.
+     */
+    public static boolean sendKeyEvent(int scanCode, int keyCode, boolean keyDown) {
         if (!sConnected) {
             return false;
         }
 
-        return nativeSendKeyEvent(keyCode, keyDown);
+        return nativeSendKeyEvent(scanCode, keyCode, keyDown);
     }
 
-    /** Passes key press information to the native handling code. */
-    private static native boolean nativeSendKeyEvent(int keyCode, boolean keyDown);
+    /**
+     * Passes key press information to the native handling code.
+     */
+    private static native boolean nativeSendKeyEvent(int scanCode, int keyCode, boolean keyDown);
 
     /** Sends TextEvent to the host. Called on the UI thread. */
     public static void sendTextEvent(String text) {
         if (!sConnected) {
             return;
         }
 
         nativeSendTextEvent(text);
     }
 
@@ skipping 157 matching lines @@
     public static void sendExtensionMessage(String type, String data) {
         if (!sConnected) {
             return;
         }
 
         nativeSendExtensionMessage(type, data);
     }
 
     private static native void nativeSendExtensionMessage(String type, String data);
 }