bluetooth: android: Enable characteristic change notification events.

device/bluetooth/bluetooth_remote_gatt_characteristic_android.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_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_ANDROID_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_ANDROID_H_
 
 #include <stdint.h>
 
 #include "base/android/jni_android.h"
@@ skipping 55 matching lines @@
   bool AddDescriptor(BluetoothGattDescriptor* descriptor) override;
   bool UpdateValue(const std::vector<uint8_t>& value) override;
   void StartNotifySession(const NotifySessionCallback& callback,
                           const ErrorCallback& error_callback) override;
   void ReadRemoteCharacteristic(const ValueCallback& callback,
                                 const ErrorCallback& error_callback) override;
   void WriteRemoteCharacteristic(const std::vector<uint8_t>& new_value,
                                  const base::Closure& callback,
                                  const ErrorCallback& error_callback) override;
 
+  // Called when value changed event occurs.
+  void OnChanged(JNIEnv* env,
+                 const base::android::JavaParamRef<jobject>& jcaller,
+                 const base::android::JavaParamRef<jbyteArray>& value);
+
   // Callback after Read operation completes.
   void OnRead(JNIEnv* env,
               const base::android::JavaParamRef<jobject>& jcaller,
               int32_t status,
               const base::android::JavaParamRef<jbyteArray>& value);
 
   // Callback after Write operation completes.
   void OnWrite(JNIEnv* env,
                const base::android::JavaParamRef<jobject>& jcaller,
                int32_t status);
@@ skipping 48 matching lines @@
   base::ScopedPtrHashMap<std::string,
                          scoped_ptr<BluetoothRemoteGattDescriptorAndroid>>
       descriptors_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattCharacteristicAndroid);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_ANDROID_H_