bluetooth: Shutdown BluetoothAdapter before DBus on ChromeOS.

device/bluetooth/bluetooth_adapter_factory.h

 // 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.
 
 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "device/bluetooth/bluetooth_adapter.h"
@@ skipping 11 matching lines @@
   // Returns true if the Bluetooth adapter is available for the current
   // platform.
   static bool IsBluetoothAdapterAvailable();
 
   // Returns the shared instance of the default adapter, creating and
   // initializing it if necessary. |callback| is called with the adapter
   // instance passed only once the adapter is fully initialized and ready to
   // use.
   static void GetAdapter(const AdapterCallback& callback);
 
+#if defined(OS_CHROMEOS)
+  // Shutdown the adapter, ending reliance DBusThreadManager, and resulting in

[armansito, 2015/01/14 23:49:47]

nit: I would make this a bit more descriptive, maybe something like "Shutdown
the adapter. This will tear down and clean up all objects owned by
BluetoothAdapter. After this call, the BluetoothAdapter will behave as if no
Bluetooth controller exists in the local system".

[scheib, 2015/01/15 00:03:40]

Done.

+  // the adapter's |IsPresent| returning false.
+  static void OnDBusThreadManagerShutdown();
+#endif
+
   // Sets the shared instance of the default adapter for testing purposes only,
   // no reference is retained after completion of the call, removing the last
   // reference will reset the factory.
   static void SetAdapterForTesting(scoped_refptr<BluetoothAdapter> adapter);
 
   // Returns true iff the implementation has a (non-NULL) shared instance of the
   // adapter. Exposed for testing.
   static bool HasSharedInstanceForTesting();
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_