Backed out changeset 848dc57b455b (bug 886109) for not working.

widget/windows/winrt/MetroApp.cpp

@@ -222,10 +222,6 @@ XRE_MetroCoreApplicationRun()
   }
 #endif
 
-  // Experimental work around for random timing/MozAfterPaint problems
-  // in mochiperf tests. (Bug 886109)
-  PR_Now();
-
   sMetroApp = Make<MetroApp>();
 
   HStringReference className(RuntimeClass_Windows_ApplicationModel_Core_CoreApplication);