Revert of More System Dialog printing code disabled on Windows.

chrome/browser/printing/print_view_manager.cc

 // Copyright (c) 2012 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 "chrome/browser/printing/print_view_manager.h"
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
@@ skipping 28 matching lines @@
     : PrintViewManagerBase(web_contents),
       observer_(NULL),
       print_preview_state_(NOT_PREVIEWING),
       scripted_print_preview_rph_(NULL) {
 }
 
 PrintViewManager::~PrintViewManager() {
   DCHECK_EQ(NOT_PREVIEWING, print_preview_state_);
 }
 
-#if !defined(OS_WIN)
 bool PrintViewManager::PrintForSystemDialogNow() {
+#if defined(OS_WIN)
+  NOTREACHED();
+#endif
   return PrintNowInternal(new PrintMsg_PrintForSystemDialog(routing_id()));
 }
 
 bool PrintViewManager::AdvancedPrintNow() {
   PrintPreviewDialogController* dialog_controller =
       PrintPreviewDialogController::GetInstance();
   if (!dialog_controller)
     return false;
   content::WebContents* print_preview_dialog =
       dialog_controller->GetPrintPreviewForContents(web_contents());
   if (print_preview_dialog) {
     if (!print_preview_dialog->GetWebUI())
       return false;
     PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
         print_preview_dialog->GetWebUI()->GetController());
     print_preview_ui->OnShowSystemDialog();
     return true;
   } else {
     return PrintNow();
   }
 }
-#endif  // !OS_WIN
+
 bool PrintViewManager::PrintPreviewNow(bool selection_only) {
   // Users can send print commands all they want and it is beyond
   // PrintViewManager's control. Just ignore the extra commands.
   // See http://crbug.com/136842 for example.
   if (print_preview_state_ != NOT_PREVIEWING)
     return false;
 
   if (!PrintNowInternal(new PrintMsg_InitiatePrintPreview(routing_id(),
                                                           selection_only))) {
     return false;
@@ skipping 104 matching lines @@
                                     OnSetupScriptedPrintPreview)
     IPC_MESSAGE_HANDLER(PrintHostMsg_ShowScriptedPrintPreview,
                         OnShowScriptedPrintPreview)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled ? true : PrintViewManagerBase::OnMessageReceived(message);
 }
 
 }  // namespace printing