Remove win_util::FormatMessage and FormatLastWin32Error. These were only used...

app/win/window_impl.h

Index: app/win/window_impl.h
===================================================================
--- app/win/window_impl.h	(revision 70263)
+++ app/win/window_impl.h	(working copy)
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef GFX_WINDOW_IMPL_H_
-#define GFX_WINDOW_IMPL_H_
+#ifndef APP_WIN_WINDOW_IMPL_H_
+#define APP_WIN_WINDOW_IMPL_H_
 #pragma once
 
 #include <atlbase.h>
@@ -17,7 +17,8 @@
 #include "gfx/native_widget_types.h"
 #include "gfx/rect.h"
 
-namespace gfx {
+namespace app {
+namespace win {
 
 // An interface implemented by classes that use message maps.
 // ProcessWindowMessage is implemented by the BEGIN_MESSAGE_MAP_EX macro.
@@ -109,6 +110,7 @@
   DISALLOW_COPY_AND_ASSIGN(WindowImpl);
 };
 
-}  // namespace gfx
+}  // namespace win
+}  // namespace app
 
-#endif  // GFX_WINDOW_IMPL_H_
+#endif  // APP_WIN_WINDOW_IMPL_H_