Gets rid of the LocationArbitrator interface, in preference for LocationProvider.

blimp/engine/feature/geolocation/blimp_location_provider.cc

Index: blimp/engine/feature/geolocation/blimp_location_provider.cc
diff --git a/blimp/engine/feature/geolocation/blimp_location_provider.cc b/blimp/engine/feature/geolocation/blimp_location_provider.cc
index eed675f8b45460592e693de4fdb6e6407a642466..2809cefdc54dbad5d769df647acfbd54c98bd8c6 100644
--- a/blimp/engine/feature/geolocation/blimp_location_provider.cc
+++ b/blimp/engine/feature/geolocation/blimp_location_provider.cc
@@ -44,21 +44,17 @@ void BlimpLocationProvider::StopProvider() {
   }
 }
 
-void BlimpLocationProvider::GetPosition(device::Geoposition* position) {
-  *position = cached_position_;
+const device::Geoposition& BlimpLocationProvider::GetPosition() {
+  return cached_position_;
 }
 
-void BlimpLocationProvider::RequestRefresh() {
+void BlimpLocationProvider::OnPermissionGranted() {
   DCHECK(is_started_);
   if (delegate_) {
     delegate_->RequestRefresh();
   }
 }
 
-void BlimpLocationProvider::OnPermissionGranted() {
-  RequestRefresh();
-}
-
 void BlimpLocationProvider::SetUpdateCallback(
     const LocationProviderUpdateCallback& callback) {
   if (delegate_) {