bluetooth: Shutdown BluetoothAdapter before DBus on ChromeOS.

device/bluetooth/bluetooth_adapter_factory.cc

Index: device/bluetooth/bluetooth_adapter_factory.cc
diff --git a/device/bluetooth/bluetooth_adapter_factory.cc b/device/bluetooth/bluetooth_adapter_factory.cc
index 33950531312af20a9c055c817a7e4c031c2a37e7..1cb4047af03675120f5efc2bf40cb3d5393b9a8f 100644
--- a/device/bluetooth/bluetooth_adapter_factory.cc
+++ b/device/bluetooth/bluetooth_adapter_factory.cc
@@ -94,6 +94,15 @@ void BluetoothAdapterFactory::GetAdapter(const AdapterCallback& callback) {
 
 }
 
+#if defined(OS_CHROMEOS)
+// static
+void BluetoothAdapterFactory::OnDBusThreadManagerShutdown() {
+  if (default_adapter.Get()) {
+    default_adapter.Get()->OnDBusThreadManagerShutdown();
+  }
+}
+#endif
+
 // static
 void BluetoothAdapterFactory::SetAdapterForTesting(
     scoped_refptr<BluetoothAdapter> adapter) {