Remove unused code

printing/printing_context_system_dialog_win.cc

 // Copyright 2014 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 "printing/printing_context_system_dialog_win.h"
 
 #include "base/auto_reset.h"
 #include "base/message_loop/message_loop.h"
 #include "printing/backend/win_helper.h"
 #include "printing/print_settings_initializer_win.h"
 #include "skia/ext/platform_device.h"
 
 namespace printing {
 
 PrintingContextSytemDialogWin::PrintingContextSytemDialogWin(Delegate* delegate)
-    : PrintingContextWin(delegate), dialog_box_(NULL) {
+    : PrintingContextWin(delegate) {
 }
 
 PrintingContextSytemDialogWin::~PrintingContextSytemDialogWin() {
 }
 
 void PrintingContextSytemDialogWin::AskUserForSettings(
     int max_pages,
     bool has_selection,
     bool is_scripted,
     const PrintSettingsCallback& callback) {
   DCHECK(!in_print_job_);
-  dialog_box_dismissed_ = false;
 
   HWND window = GetRootWindow(delegate_->GetParentView());
   DCHECK(window);
 
   // Show the OS-dependent dialog box.
   // If the user press
   // - OK, the settings are reset and reinitialized with the new settings. OK
   // is
   //   returned.
   // - Apply then Cancel, the settings are reset and reinitialized with the
@@ skipping 30 matching lines @@
 
   if (ShowPrintDialog(&dialog_options) != S_OK) {
     ResetSettings();
     callback.Run(FAILED);
   }
 
   // TODO(maruel):  Support PD_PRINTTOFILE.
   callback.Run(ParseDialogResultEx(dialog_options));
 }
 
-void PrintingContextSytemDialogWin::Cancel() {
-  PrintingContextWin::Cancel();
-  if (dialog_box_) {
-    DestroyWindow(dialog_box_);
-    dialog_box_dismissed_ = true;
-  }
-}
-
 HRESULT PrintingContextSytemDialogWin::ShowPrintDialog(PRINTDLGEX* options) {
   // Runs always on the UI thread.
   static bool is_dialog_shown = false;
   if (is_dialog_shown)
     return E_FAIL;
   // Block opening dialog from nested task. It crashes PrintDlgEx.
   base::AutoReset<bool> auto_reset(&is_dialog_shown, true);
 
   // Note that this cannot use ui::BaseShellDialog as the print dialog is
   // system modal: opening it from a background thread can cause Windows to
@@ skipping 172 matching lines @@
 
   if (dialog_options.hDevMode != NULL)
     GlobalFree(dialog_options.hDevMode);
   if (dialog_options.hDevNames != NULL)
     GlobalFree(dialog_options.hDevNames);
 
   return context() ? OK : FAILED;
 }
 
 }  // namespace printing