[DeviceService] Move //device/nfc to be part of the internal impl of Device Service

services/device/nfc/android/java/src/org/chromium/device/nfc/NfcImpl.java

 // Copyright 2016 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.device.nfc;
 
 import android.Manifest;
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.content.Context;
@@ skipping 648 matching lines @@
     /**
      * Cancels push timeout task.
      */
     void cancelPushTimeoutTask() {
         if (mPushTimeoutRunnable == null) return;
 
         mPushTimeoutHandler.removeCallbacks(mPushTimeoutRunnable);
         mPushTimeoutRunnable = null;
     }
 }