bluetooth: Add characteristicvaluechanged event

device/bluetooth/test/mock_bluetooth_gatt_notify_session.h

 // Copyright 2014 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_MOCK_BLUETOOTH_GATT_NOTIFY_SESSION_H_
 #define DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_GATT_NOTIFY_SESSION_H_
 
 #include <string>
 
 #include "base/callback.h"
+#include "base/timer/timer.h"
 #include "device/bluetooth/bluetooth_gatt_notify_session.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace device {
 
+class MockBluetoothAdapter;
+class MockBluetoothGattCharacteristic;
+
 class MockBluetoothGattNotifySession : public BluetoothGattNotifySession {
  public:
   explicit MockBluetoothGattNotifySession(
       const std::string& characteristic_identifier);
   virtual ~MockBluetoothGattNotifySession();
 
   MOCK_CONST_METHOD0(GetCharacteristicIdentifier, std::string());
   MOCK_METHOD0(IsActive, bool());
   MOCK_METHOD1(Stop, void(const base::Closure&));
 
+  // Starts notifying the adapter's observers that the characteristic's value
+  // changed.
+  void StartTestNotifications(MockBluetoothAdapter* adapter,
+                              MockBluetoothGattCharacteristic* characteristic,
+                              const std::vector<uint8_t>& value);
+  void StopTestNotifications();
+
  private:
+  void TestNotify(MockBluetoothAdapter* adapter,
+                  MockBluetoothGattCharacteristic* characteristic,
+                  const std::vector<uint8_t>& value);
+
+  base::RepeatingTimer test_notifications_timer_;
+
   DISALLOW_COPY_AND_ASSIGN(MockBluetoothGattNotifySession);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_GATT_NOTIFY_SESSION_H_