Geolocation: Extract GeolocationProvider::Delegate into GeolocationDelegate (no new code)

content/browser/geolocation/geolocation_provider_impl.h

Index: content/browser/geolocation/geolocation_provider_impl.h
diff --git a/content/browser/geolocation/geolocation_provider_impl.h b/content/browser/geolocation/geolocation_provider_impl.h
index 7b212ce9c0e6974e08ccccc7825b8715e4d94728..3a6e77950ef8b620399e58235d19aded734a6e86 100644
--- a/content/browser/geolocation/geolocation_provider_impl.h
+++ b/content/browser/geolocation/geolocation_provider_impl.h
@@ -22,6 +22,7 @@ template<typename Type> struct DefaultSingletonTraits;
 }
 
 namespace content {
+class GeolocationDelegate;
 class LocationArbitrator;
 
 class CONTENT_EXPORT GeolocationProviderImpl
@@ -92,7 +93,7 @@ class CONTENT_EXPORT GeolocationProviderImpl
   bool ignore_location_updates_;
 
   // The system provided Delegate for the |arbitrator_|.
-  std::unique_ptr<GeolocationProvider::Delegate> delegate_;
+  std::unique_ptr<GeolocationDelegate> delegate_;
 
   // Only to be used on the geolocation thread.
   std::unique_ptr<LocationArbitrator> arbitrator_;