Move UI-relevant Windows files to ui/base.

ui/base/win/hwnd_util.h

Index: ui/base/win/hwnd_util.h
===================================================================
--- ui/base/win/hwnd_util.h	(revision 0)
+++ ui/base/win/hwnd_util.h	(working copy)
@@ -1,9 +1,9 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
-#ifndef APP_WIN_HWND_UTIL_H_
-#define APP_WIN_HWND_UTIL_H_
+#ifndef UI_BASE_WIN_HWND_UTIL_H_
+#define UI_BASE_WIN_HWND_UTIL_H_
 #pragma once
 
 #include <windows.h>
@@ -14,8 +14,7 @@
 class Size;
 }
 
-namespace app {
-namespace win {
+namespace ui {
 
 // A version of the GetClassNameW API that returns the class name in an
 // string16. An empty result indicates a failure to get the class name.
@@ -45,7 +44,6 @@
 // enabled.
 bool ShouldUseVistaFrame();
 
-}  // namespace win
-}  // namespace app
+}  // namespace ui
 
-#endif  // APP_WIN_HWND_UTIL_H_
+#endif  // UI_BASE_WIN_HWND_UTIL_H_