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

device/geolocation/network_location_provider.cc

Index: device/geolocation/network_location_provider.cc
diff --git a/device/geolocation/network_location_provider.cc b/device/geolocation/network_location_provider.cc
index 46206a158fb0018e47dfd75d64245e5681dc8f0e..c8626eff5240b07bdbb640f41b69e7d39bd5356e 100644
--- a/device/geolocation/network_location_provider.cc
+++ b/device/geolocation/network_location_provider.cc
@@ -128,9 +128,8 @@ NetworkLocationProvider::~NetworkLocationProvider() {
 }
 
 // LocationProvider implementation
-void NetworkLocationProvider::GetPosition(Geoposition* position) {
-  DCHECK(position);
-  *position = position_;
+const Geoposition& NetworkLocationProvider::GetPosition() {
+  return position_;
 }
 
 void NetworkLocationProvider::RequestRefresh() {