Make IDL Callbacks non-refcounted by default

Source/modules/geolocation/Geolocation.cpp

Index: Source/modules/geolocation/Geolocation.cpp
diff --git a/Source/modules/geolocation/Geolocation.cpp b/Source/modules/geolocation/Geolocation.cpp
index 94a5afec7773f3f0398a25db5eb4b78232907f9a..94818f95fa99e1da1e3e0155464a77d54b2cc501 100644
--- a/Source/modules/geolocation/Geolocation.cpp
+++ b/Source/modules/geolocation/Geolocation.cpp
@@ -68,7 +68,7 @@ static PassRefPtr<PositionError> createPositionError(GeolocationError* error)
     return PositionError::create(code, error->message());
 }
 
-Geolocation::GeoNotifier::GeoNotifier(Geolocation* geolocation, PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
+Geolocation::GeoNotifier::GeoNotifier(Geolocation* geolocation, PassOwnPtr<PositionCallback> successCallback, PassOwnPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
     : m_geolocation(geolocation)
     , m_successCallback(successCallback)
     , m_errorCallback(errorCallback)
@@ -284,7 +284,7 @@ Geoposition* Geolocation::lastPosition()
     return m_lastPosition.get();
 }
 
-void Geolocation::getCurrentPosition(PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
+void Geolocation::getCurrentPosition(PassOwnPtr<PositionCallback> successCallback, PassOwnPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
 {
     if (!frame())
         return;
@@ -295,7 +295,7 @@ void Geolocation::getCurrentPosition(PassRefPtr<PositionCallback> successCallbac
     m_oneShots.add(notifier);
 }
 
-int Geolocation::watchPosition(PassRefPtr<PositionCallback> successCallback, PassRefPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
+int Geolocation::watchPosition(PassOwnPtr<PositionCallback> successCallback, PassOwnPtr<PositionErrorCallback> errorCallback, PassRefPtr<PositionOptions> options)
 {
     if (!frame())
         return 0;