Remove DialogDelegate::UseNewStyle and unused code.

chrome/browser/chromeos/login/captive_portal_window_proxy.h

Index: chrome/browser/chromeos/login/captive_portal_window_proxy.h
diff --git a/chrome/browser/chromeos/login/captive_portal_window_proxy.h b/chrome/browser/chromeos/login/captive_portal_window_proxy.h
index 05d75e2a25371038c001d9a5657779ab9e7b03f0..3ac5ae35be3c1eeff13ebee5202a0fcb1e077d59 100644
--- a/chrome/browser/chromeos/login/captive_portal_window_proxy.h
+++ b/chrome/browser/chromeos/login/captive_portal_window_proxy.h
@@ -7,7 +7,6 @@
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "ui/gfx/native_widget_types.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace content {
@@ -38,7 +37,6 @@ class CaptivePortalWindowProxy : public views::WidgetObserver {
   typedef CaptivePortalWindowProxyDelegate Delegate;
 
   CaptivePortalWindowProxy(Delegate* delegate,
-                           gfx::NativeWindow parent,
                            content::WebContents* web_contents);
   virtual ~CaptivePortalWindowProxy();
 
@@ -98,7 +96,6 @@ class CaptivePortalWindowProxy : public views::WidgetObserver {
   // Not owned by this class.
   views::Widget* widget_;
   scoped_ptr<CaptivePortalView> captive_portal_view_;
-  gfx::NativeWindow parent_;
 
   // Not owned by this class.
   content::WebContents* web_contents_;