Add DartPackage annotation to all mojo_services mojoms

mojo/services/location/public/interfaces/location_service.mojom

 // Copyright 2015 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.
 
+[DartPackage="mojo_services"]
 module mojo;
 
 import "location/public/interfaces/location.mojom";
 
 // LocationService provides updates on the device's location.
 // NOTE: This is specifically targetted towards use on Android by
 // implementations which are thin wrappers over the Android Location API or the
 // Google Play Services Location API. If we ever want to expand this to multiple
 // platforms or if it starts growing in complexity, we should strongly consider
 // use of Chromium's geolocation code.
@@ skipping 10 matching lines @@
     PRIORITY_NO_POWER,
   };
 
   // Returns a location when it changes, based on |priority|. If this is the
   // initial call, the last known location is returned immediately, if
   // available.
   // Returns NULL if the client requests a new location while a request is
   // already in flight.
   GetNextLocation(UpdatePriority priority) => (Location? location);
 };