bluetooth: android: register for adapter on/off events.

device/bluetooth/bluetooth_adapter_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_ADAPTER_ANDROID_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_ANDROID_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
@@ skipping 65 matching lines @@
       const CreateServiceErrorCallback& error_callback) override;
   void RegisterAudioSink(
       const BluetoothAudioSink::Options& options,
       const AcquiredCallback& callback,
       const BluetoothAudioSink::ErrorCallback& error_callback) override;
   void RegisterAdvertisement(
       scoped_ptr<BluetoothAdvertisement::Data> advertisement_data,
       const CreateAdvertisementCallback& callback,
       const CreateAdvertisementErrorCallback& error_callback) override;
 
+  // Called when adapter state changes.
+  void OnAdapterStateChanged(JNIEnv* env,
+                             const base::android::JavaParamRef<jobject>& caller,
+                             const bool powered);
+
   // Handles a scan error event by invalidating all discovery sessions.
   void OnScanFailed(JNIEnv* env,
                     const base::android::JavaParamRef<jobject>& caller);
 
   // Creates or updates device with advertised UUID information when a device is
   // discovered during a scan.
   void CreateOrUpdateDeviceOnScan(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& caller,
       const base::android::JavaParamRef<jstring>& address,
@@ skipping 28 matching lines @@
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothAdapterAndroid> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterAndroid);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_ANDROID_H_