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

device/geolocation/location_provider_android.cc

Index: device/geolocation/location_provider_android.cc
diff --git a/device/geolocation/location_provider_android.cc b/device/geolocation/location_provider_android.cc
index 0f97923dc8900e3894b90fe6e9916e90a10244ea..0c10a7140af8b08894c6f883d5a4362322127f98 100644
--- a/device/geolocation/location_provider_android.cc
+++ b/device/geolocation/location_provider_android.cc
@@ -32,8 +32,8 @@ void LocationProviderAndroid::StopProvider() {
   AndroidLocationApiAdapter::GetInstance()->Stop();
 }
 
-void LocationProviderAndroid::GetPosition(Geoposition* position) {
-  *position = last_position_;
+const Geoposition& LocationProviderAndroid::GetPosition() {
+  return last_position_;
 }
 
 void LocationProviderAndroid::RequestRefresh() {