--- a/widget/windows/LSPAnnotator.cpp
+++ b/widget/windows/LSPAnnotator.cpp
@@ -29,26 +29,23 @@
 namespace mozilla {
 namespace crashreporter {
 
 class LSPAnnotationGatherer : public Runnable
 {
   ~LSPAnnotationGatherer() {}
 
 public:
-  NS_DECL_THREADSAFE_ISUPPORTS
   NS_DECL_NSIRUNNABLE
 
   void Annotate();
   nsCString mString;
   nsCOMPtr<nsIThread> mThread;
 };
 
-NS_IMPL_ISUPPORTS(LSPAnnotationGatherer, nsIRunnable)
-
 void
 LSPAnnotationGatherer::Annotate()
 {
   nsCOMPtr<nsICrashReporter> cr =
     do_GetService("@mozilla.org/toolkit/crash-reporter;1");
   bool enabled;
   if (cr && NS_SUCCEEDED(cr->GetEnabled(&enabled)) && enabled) {
     cr->AnnotateCrashReport(NS_LITERAL_CSTRING("Winsock_LSP"), mString);