Block scripted printing.

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 115 matching lines @@
         map.find(scripted_print_preview_rph_);
     CHECK(it != map.end());
     it->second.Run();
     map.erase(scripted_print_preview_rph_);
     scripted_print_preview_rph_ = NULL;
   }
   print_preview_state_ = NOT_PREVIEWING;
 }
 
 void PrintViewManager::PreviewPrintingRequestCancelled() {
-  if (!web_contents())
-    return;
   Send(new PrintMsg_PreviewPrintingRequestCancelled(routing_id()));
 }
 
+void PrintViewManager::SetScriptedPrintingBlocked(bool blocked) {
+  Send(new PrintMsg_SetScriptedPrintingBlocked(routing_id(), blocked));
+}
+
 void PrintViewManager::set_observer(PrintViewManagerObserver* observer) {
   DCHECK(!observer || !observer_);
   observer_ = observer;
 }
 
 void PrintViewManager::StopNavigation() {
   // Cancel the current job, wait for the worker to finish.
   TerminatePrintJob(true);
 }
 
@@ skipping 463 matching lines @@
   scoped_refptr<printing::PrinterQuery> printer_query;
   print_job_manager->PopPrinterQuery(cookie, &printer_query);
   if (!printer_query.get())
     return;
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&PrinterQuery::StopWorker, printer_query.get()));
 }
 
 }  // namespace printing