browser/ui: Remove unused definitions of CloseWebDialog() function.

chrome/browser/ui/gtk/web_dialog_gtk.cc

Index: chrome/browser/ui/gtk/web_dialog_gtk.cc
diff --git a/chrome/browser/ui/gtk/web_dialog_gtk.cc b/chrome/browser/ui/gtk/web_dialog_gtk.cc
index dc40f4f7a7a0ec1a8ba68c54bfde5aace48bbd32..7b1dfa5c8dcd2ee126991f34ece948d8aea781c7 100644
--- a/chrome/browser/ui/gtk/web_dialog_gtk.cc
+++ b/chrome/browser/ui/gtk/web_dialog_gtk.cc
@@ -30,17 +30,11 @@ gfx::NativeWindow ShowWebDialog(gfx::NativeWindow parent,
                                 Profile* profile,
                                 Browser* browser,
                                 WebDialogDelegate* delegate) {
-  // Ignore style for now. The style parameter only used in the implementation
-  // in web_dialog_view.cc file.
   WebDialogGtk* web_dialog =
       new WebDialogGtk(profile, browser, delegate, parent);
   return web_dialog->InitDialog();
 }
 
-void CloseWebDialog(gfx::NativeWindow window) {
-  gtk_dialog_response(GTK_DIALOG(window), GTK_RESPONSE_CLOSE);
-}
-
 } // namespace browser
 
 namespace {