ui/gfx: Get rid of a few static variables from NativeTheme* type.

ui/gfx/native_theme_win.cc

 // 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.
 
 #include "ui/gfx/native_theme_win.h"
 
 #include <windows.h>
 #include <uxtheme.h>
 #include <vsstyle.h>
 #include <vssym32.h>
 
+#include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/scoped_handle.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/win/scoped_gdi_object.h"
 #include "base/win/scoped_hdc.h"
 #include "base/win/windows_version.h"
 #include "skia/ext/platform_canvas.h"
 #include "skia/ext/skia_utils_win.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
@@ skipping 33 matching lines @@
 
 }  // namespace
 
 namespace gfx {
 
 // static
 const NativeTheme* NativeTheme::instance() {
   return NativeThemeWin::instance();
 }
 
+static base::LazyInstance<NativeThemeWin> g_native_theme(
+    base::LINKER_INITIALIZED);
+
 // static
 const NativeThemeWin* NativeThemeWin::instance() {
-  // The global NativeThemeWin instance.
-  static const NativeThemeWin s_native_theme;
-  return &s_native_theme;
+  return g_native_theme.Pointer();
 }
 
 NativeThemeWin::NativeThemeWin()
     : theme_dll_(LoadLibrary(L"uxtheme.dll")),
       draw_theme_(NULL),
       draw_theme_ex_(NULL),
       get_theme_color_(NULL),
       get_theme_content_rect_(NULL),
       get_theme_part_size_(NULL),
       open_theme_(NULL),
@@ skipping 1573 matching lines @@
       }
       break;
     default:
       NOTREACHED() << "Invalid part: " << part;
       break;
   }
   return state_id;
 }
 
 }  // namespace gfx