Cutover v8 to use new style callbacks internally

src/extensions/statistics-extension.h

Index: src/extensions/statistics-extension.h
diff --git a/src/extensions/statistics-extension.h b/src/extensions/statistics-extension.h
index 433c4cf6870c706957743415f23a27f4c4663244..bfd9c4134e298a097c8c202b894a904cdd56f32b 100644
--- a/src/extensions/statistics-extension.h
+++ b/src/extensions/statistics-extension.h
@@ -38,7 +38,7 @@ class StatisticsExtension : public v8::Extension {
   StatisticsExtension() : v8::Extension("v8/statistics", kSource) {}
   virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
       v8::Handle<v8::String> name);
-  static v8::Handle<v8::Value> GetCounters(const v8::Arguments& args);
+  static void GetCounters(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void Register();
  private:
   static const char* const kSource;