Remove unused code

printing/printing_context_system_dialog_win.cc

Index: printing/printing_context_system_dialog_win.cc
diff --git a/printing/printing_context_system_dialog_win.cc b/printing/printing_context_system_dialog_win.cc
index b89f1a4e469ac89ca10b34942a95f8fd35a21010..e67ae3bf839f003d036e24e8b7b58097b30868ff 100644
--- a/printing/printing_context_system_dialog_win.cc
+++ b/printing/printing_context_system_dialog_win.cc
@@ -13,7 +13,7 @@
 namespace printing {
 
 PrintingContextSytemDialogWin::PrintingContextSytemDialogWin(Delegate* delegate)
-    : PrintingContextWin(delegate), dialog_box_(NULL) {
+    : PrintingContextWin(delegate) {
 }
 
 PrintingContextSytemDialogWin::~PrintingContextSytemDialogWin() {
@@ -25,7 +25,6 @@ void PrintingContextSytemDialogWin::AskUserForSettings(
     bool is_scripted,
     const PrintSettingsCallback& callback) {
   DCHECK(!in_print_job_);
-  dialog_box_dismissed_ = false;
 
   HWND window = GetRootWindow(delegate_->GetParentView());
   DCHECK(window);
@@ -76,14 +75,6 @@ void PrintingContextSytemDialogWin::AskUserForSettings(
   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;