bluetooth: Shutdown BluetoothAdapter before DBus on ChromeOS.

device/bluetooth/bluetooth_adapter_factory.h

Index: device/bluetooth/bluetooth_adapter_factory.h
diff --git a/device/bluetooth/bluetooth_adapter_factory.h b/device/bluetooth/bluetooth_adapter_factory.h
index 9b98a211559aeb80604f58179f420427665985f0..0c6e33d43e7ea309d083bd6b0fb9f7b569f1958f 100644
--- a/device/bluetooth/bluetooth_adapter_factory.h
+++ b/device/bluetooth/bluetooth_adapter_factory.h
@@ -29,6 +29,12 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterFactory {
   // 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.