bluetooth: android: Enable characteristic change notification events.

device/bluetooth/test/bluetooth_test.h

 // 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.
 
 #ifndef DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_H_
 #define DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_H_
 
 #include <stdint.h>
 
 #include "base/memory/ref_counted.h"
@@ skipping 120 matching lines @@
 
   // Simulates a Characteristic Set Notify success.
   virtual void SimulateGattNotifySessionStarted(
       BluetoothGattCharacteristic* characteristic) {}
 
   // Simulates a Characteristic Set Notify operation failing synchronously once
   // for an unknown reason.
   virtual void SimulateGattCharacteristicSetNotifyWillFailSynchronouslyOnce(
       BluetoothGattCharacteristic* characteristic) {}
 
+  // Simulates a Characteristic Changed operation with updated |value|.
+  virtual void SimulateGattCharacteristicChanged(
+      BluetoothGattCharacteristic* characteristic,
+      const std::vector<uint8_t>& value) {}
+
   // Simulates a Characteristic Read operation succeeding, returning |value|.
   // If |characteristic| is null, acts upon the characteristic provided to
   // RememberCharacteristicForSubsequentAction.
   virtual void SimulateGattCharacteristicRead(
       BluetoothGattCharacteristic* characteristic,
       const std::vector<uint8_t>& value) {}
 
   // Simulates a Characteristic Read operation failing with a GattErrorCode.
   virtual void SimulateGattCharacteristicReadError(
       BluetoothGattCharacteristic* characteristic,
@@ skipping 96 matching lines @@
   int actual_error_callback_calls_ = 0;
   bool unexpected_success_callback_ = false;
   bool unexpected_error_callback_ = false;
 
   base::WeakPtrFactory<BluetoothTestBase> weak_factory_;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_H_