Notify the BluetoothAdapter::Observer when a bluetooth peripheral disconnects on Android and Mac.

device/bluetooth/bluetooth_adapter.cc

 // Copyright (c) 2012 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.
 
 #include "device/bluetooth/bluetooth_adapter.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 146 matching lines @@
     return NULL;
 
   return pairing_delegates_.front().first;
 }
 
 void BluetoothAdapter::NotifyAdapterStateChanged(bool powered) {
   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
                     AdapterPoweredChanged(this, powered));
 }
 
+void BluetoothAdapter::NotifyDeviceChanged(BluetoothDevice* device) {
+  DCHECK(device);
+  DCHECK_EQ(device->GetAdapter(), this);
+
+  FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
+                    DeviceChanged(this, device));
+}
+
 #if defined(OS_CHROMEOS) || defined(OS_LINUX)
 void BluetoothAdapter::NotifyDevicePairedChanged(BluetoothDevice* device,
                                                  bool new_paired_status) {
   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
                     DevicePairedChanged(this, device, new_paired_status));
 }
 #endif
 
 void BluetoothAdapter::NotifyGattServiceAdded(
     BluetoothRemoteGattService* service) {
@@ skipping 190 matching lines @@
 
 // static
 void BluetoothAdapter::RecordBluetoothDiscoverySessionStopOutcome(
     UMABluetoothDiscoverySessionOutcome outcome) {
   UMA_HISTOGRAM_ENUMERATION(
       "Bluetooth.DiscoverySession.Stop.Outcome", static_cast<int>(outcome),
       static_cast<int>(UMABluetoothDiscoverySessionOutcome::COUNT));
 }
 
 }  // namespace device