Revert of Partially convert geolocation IPC to Mojo.

content/common/geolocation_service.mojom

-// Copyright 2014 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.
-
-import "content/public/common/mojo_geoposition.mojom"
-
-module content {
-
-// The Geolocation service provides updates on the device's location to its
-// client. By default, it provides updates with low accuracy, but
-// |SetHighAccuracy()| can be called to change this.
-[Client=GeolocationServiceClient]
-interface GeolocationService {
-  SetHighAccuracy(bool high_accuracy);
-};
-
-interface GeolocationServiceClient {
-  OnLocationUpdate(MojoGeoposition geoposition);
-};
-
-}