Disable Ctrl+Shift+P on Chrome OS

printing/printing_context_chromeos.cc

 // Copyright 2016 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_chromeos.h"
 
 #include <cups/cups.h>
 #include <stdint.h>
 #include <unicode/ulocdata.h>
 
@@ skipping 147 matching lines @@
 
 PrintingContextChromeos::~PrintingContextChromeos() {
   ReleaseContext();
 }
 
 void PrintingContextChromeos::AskUserForSettings(
     int max_pages,
     bool has_selection,
     bool is_scripted,
     const PrintSettingsCallback& callback) {
-  // We don't want to bring up a dialog here.  Ever.  Just signal the callback.
-  callback.Run(OK);
+  // We don't want to bring up a dialog here.  Ever.  This should not be called.
+  NOTREACHED();
 }
 
 PrintingContext::Result PrintingContextChromeos::UseDefaultSettings() {
   DCHECK(!in_print_job_);
 
   ResetSettings();
 
   std::string device_name = base::UTF16ToUTF8(settings_.device_name());
   if (device_name.empty())
     return OnError();
@@ skipping 212 matching lines @@
   DCHECK(in_print_job_);
   DCHECK(printer_);
 
   if (!printer_->StreamData(buffer))
     return OnError();
 
   return OK;
 }
 
 }  // namespace printing