Add support for local services/characteristics/descriptors.

device/bluetooth/bluetooth_gatt_service.h

Index: device/bluetooth/bluetooth_gatt_service.h
diff --git a/device/bluetooth/bluetooth_gatt_service.h b/device/bluetooth/bluetooth_gatt_service.h
index fe4bf1c5dd0fdc30fa49c3f04fd64bfc862cb48d..7c37f7d33a752c8f9e466c7a7e2951ba7bb0b0c2 100644
--- a/device/bluetooth/bluetooth_gatt_service.h
+++ b/device/bluetooth/bluetooth_gatt_service.h
@@ -7,6 +7,7 @@
 
 #include <stdint.h>
 
+#include <string>
 #include <vector>
 
 #include "base/callback.h"
@@ -142,7 +143,7 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothGattService {
   };
 
   // The ErrorCallback is used by methods to asynchronously report errors.
-  typedef base::Closure ErrorCallback;
+  using ErrorCallback = base::Callback<void(GattErrorCode error_code)>;
 
   virtual ~BluetoothGattService();