Partially convert geolocation IPC to Mojo.

content/common/geolocation_service.mojom

Index: content/common/geolocation_service.mojom
diff --git a/content/common/geolocation_service.mojom b/content/common/geolocation_service.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..bde7e0f8e780888a817c31581a6452d7575246c2
--- /dev/null
+++ b/content/common/geolocation_service.mojom
@@ -0,0 +1,21 @@
+// 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);
+};
+
+}