[cros] Postpone call to GetNativeWindow() in NetworkDropdown till it's really needed.

chrome/browser/ui/webui/chromeos/login/network_dropdown.h

Index: chrome/browser/ui/webui/chromeos/login/network_dropdown.h
diff --git a/chrome/browser/ui/webui/chromeos/login/network_dropdown.h b/chrome/browser/ui/webui/chromeos/login/network_dropdown.h
index d5a6e7fd8bd3a7b7635be9bc71a31f7bc8e8da93..cc521d49614b5fd8af10961780b791dd2db74fc4 100644
--- a/chrome/browser/ui/webui/chromeos/login/network_dropdown.h
+++ b/chrome/browser/ui/webui/chromeos/login/network_dropdown.h
@@ -22,7 +22,7 @@ class NetworkDropdown : public NetworkMenu::Delegate,
                         NetworkLibrary::NetworkManagerObserver,
                         public LoginHtmlDialog::Delegate {
  public:
-  NetworkDropdown(WebUI* web_ui, gfx::NativeWindow parent_window, bool oobe);
+  NetworkDropdown(WebUI* web_ui, bool oobe);
   virtual ~NetworkDropdown();
 
   // Sets last active network type. Used to show correct disconnected icon.
@@ -55,8 +55,6 @@ class NetworkDropdown : public NetworkMenu::Delegate,
  private:
   void SetNetworkIconAndText();
 
-  gfx::NativeWindow parent_window_;
-
   // The Network menu.
   scoped_ptr<NetworkMenuWebUI> network_menu_;
   // The Network menu icon.