Fix statics in NativeTheme*::instance() to avoid destruction post main

ui/gfx/native_theme_aura.cc

Index: ui/gfx/native_theme_aura.cc
diff --git a/ui/gfx/native_theme_aura.cc b/ui/gfx/native_theme_aura.cc
index e5560cb52419f74a7b4e97d5b1fa4152469f2817..230088807661fb0d3455aee4b8f03068654f6484 100644
--- a/ui/gfx/native_theme_aura.cc
+++ b/ui/gfx/native_theme_aura.cc
@@ -4,6 +4,7 @@
 
 #include "ui/gfx/native_theme_aura.h"
 
+#include "base/basictypes.h"
 #include "grit/gfx_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/size.h"
@@ -24,7 +25,7 @@ const NativeTheme* NativeTheme::instance() {
 
 // static
 const NativeThemeAura* NativeThemeAura::instance() {
-  static const NativeThemeAura s_native_theme;
+  CR_DEFINE_STATIC_LOCAL(NativeThemeAura, s_native_theme, ());
   return &s_native_theme;
 }