bluetooth: android: Fix a couple of crashes when adapter is turned on/off.

device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.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.device.bluetooth;
 
 import android.Manifest;
 import android.annotation.TargetApi;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.le.ScanFilter;
@@ skipping 265 matching lines @@
             return mGatt;
         }
 
         @Override
         public String getAddress() {
             return mAddress;
         }
 
         @Override
         public int getBluetoothClass_getDeviceClass() {
-            return 0x1F00; // Unspecified Device Class
+            return Wrappers.DEVICE_CLASS_UNSPECIFIED;
         }
 
         @Override
         public int getBondState() {
             return BluetoothDevice.BOND_NONE;
         }
 
         @Override
         public String getName() {
             return mName;
@@ skipping 357 matching lines @@
             long nativeBluetoothTestAndroid);
 
     // Binds to BluetoothTestAndroid::OnFakeBluetoothGattWriteCharacteristic.
     private static native void nativeOnFakeBluetoothGattWriteCharacteristic(
             long nativeBluetoothTestAndroid, byte[] value);
 
     // Binds to BluetoothTestAndroid::OnFakeBluetoothGattWriteDescriptor.
     private static native void nativeOnFakeBluetoothGattWriteDescriptor(
             long nativeBluetoothTestAndroid, byte[] value);
 }