Added base::win::InitializeWindowClass() wrapper to make sure that window classes are properly asso…

base/win/wrapped_window_proc.h

Index: base/win/wrapped_window_proc.h
diff --git a/base/win/wrapped_window_proc.h b/base/win/wrapped_window_proc.h
index c9916504776e2e2ba2f763f62c56fa8dd4fb1939..6d887ae80cc2dfcf763183a5f286af9e97c0061c 100644
--- a/base/win/wrapped_window_proc.h
+++ b/base/win/wrapped_window_proc.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -14,6 +14,7 @@
 #include <windows.h>
 
 #include "base/base_export.h"
+#include "base/string16.h"
 
 namespace base {
 namespace win {
@@ -34,6 +35,22 @@ BASE_EXPORT WinProcExceptionFilter SetWinProcExceptionFilter(
 // Calls the registered exception filter.
 BASE_EXPORT int CallExceptionFilter(EXCEPTION_POINTERS* info);
 
+// Initializes the WNDCLASSEX structure |*class_out| to be passed to
+// RegisterClassEx() making sure that it is associated with the module
+// containing the window procedure.
+BASE_EXPORT void InitializeWindowClass(
+    const char16* class_name,
+    WNDPROC window_proc,
+    UINT style,
+    int class_extra,
+    int window_extra,
+    HCURSOR cursor,
+    HBRUSH background,
+    const char16* menu_name,
+    HICON large_icon,
+    HICON small_icon,
+    WNDCLASSEX* class_out);
+
 // Wrapper that supplies a standard exception frame for the provided WindowProc.
 // The normal usage is something like this:
 //