Bug 857538 - Diagnostic for HWNDGetter leak. r=ted

widget/windows/WidgetTraceEvent.cpp

@@ -22,6 +22,7 @@
 #include "nsAutoPtr.h"
 #include "nsServiceManagerUtils.h"
 #include "nsThreadUtils.h"
+#include "nsTraceRefcnt.h"
 #include "nsWindowDefs.h"
 
 namespace {
@@ -33,7 +34,12 @@ HANDLE sEventHandle = NULL;
 // thread.
 class HWNDGetter : public nsRunnable {
 public:
-  HWNDGetter() : hidden_window_hwnd(NULL) {}
+  HWNDGetter() : hidden_window_hwnd(NULL) {
+    MOZ_COUNT_CTOR(HWNDGetter);
+  }
+  ~HWNDGetter() {
+    MOZ_COUNT_DTOR(HWNDGetter);
+  }
 
   HWND hidden_window_hwnd;