Add an exception wrapper to the WindowProc functions so...

chrome/browser/process_singleton_win.cc

Index: chrome/browser/process_singleton_win.cc
===================================================================
--- chrome/browser/process_singleton_win.cc	(revision 78053)
+++ chrome/browser/process_singleton_win.cc	(working copy)
@@ -11,6 +11,7 @@
 #include "base/process_util.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_handle.h"
+#include "base/win/wrapped_window_proc.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extensions_startup.h"
 #include "chrome/browser/platform_util.h"
@@ -178,7 +179,8 @@
 
   WNDCLASSEX wc = {0};
   wc.cbSize = sizeof(wc);
-  wc.lpfnWndProc = ProcessSingleton::WndProcStatic;
+  wc.lpfnWndProc =
+      base::win::WrappedWindowProc<ProcessSingleton::WndProcStatic>;
   wc.hInstance = hinst;
   wc.lpszClassName = chrome::kMessageWindowClass;
   ATOM clazz = RegisterClassEx(&wc);