bluetooth: Shutdown BluetoothAdapter before DBus on ChromeOS.

device/bluetooth/bluetooth_adapter_chromeos.h

 // Copyright 2013 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_CHROMEOS_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_CHROMEOS_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 26 matching lines @@
 class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterChromeOS
     : public device::BluetoothAdapter,
       public chromeos::BluetoothAdapterClient::Observer,
       public chromeos::BluetoothDeviceClient::Observer,
       public chromeos::BluetoothInputClient::Observer,
       public chromeos::BluetoothAgentServiceProvider::Delegate {
  public:
   static base::WeakPtr<BluetoothAdapter> CreateAdapter();
 
   // BluetoothAdapter:
+  void Shutdown() override;
   void DeleteOnCorrectThread() const override;
   virtual void AddObserver(
       device::BluetoothAdapter::Observer* observer) override;
   virtual void RemoveObserver(
       device::BluetoothAdapter::Observer* observer) override;
   virtual std::string GetAddress() const override;
   virtual std::string GetName() const override;
   virtual void SetName(const std::string& name,
                        const base::Closure& callback,
                        const ErrorCallback& error_callback) override;
@@ skipping 177 matching lines @@
   void OnStopDiscoveryError(const ErrorCallback& error_callback,
                             const std::string& error_name,
                             const std::string& error_message);
 
   // Processes the queued discovery requests. For each DiscoveryCallbackPair in
   // the queue, this method will try to add a new discovery session. This method
   // is called whenever a pending D-Bus call to start or stop discovery has
   // ended (with either success or failure).
   void ProcessQueuedDiscoveryRequests();
 
+  // Set in |Shutdown()| and used to force |IsPresent()| to return false.
+  bool is_shutdown_;
+
   // Number of discovery sessions that have been added.
   int num_discovery_sessions_;
 
   // True, if there is a pending request to start or stop discovery.
   bool discovery_request_pending_;
 
   // List of queued requests to add new discovery sessions. While there is a
   // pending request to BlueZ to start or stop discovery, many requests from
   // within Chrome to start or stop discovery sessions may occur. We only
   // queue requests to add new sessions to be processed later. All requests to
@@ skipping 21 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<BluetoothAdapterChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterChromeOS);
 };
 
 }  // namespace chromeos
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_CHROMEOS_H_