De-duplicate job_settings parsing code.

printing/printing_context_gtk.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 "printing/printing_context_gtk.h"
 
 #include <gtk/gtk.h>
 #include <gtk/gtkunixprint.h>
 
 #include "base/logging.h"
@@ skipping 61 matching lines @@
   if (!print_dialog_) {
     print_dialog_ = create_dialog_func_(this);
     print_dialog_->AddRefToDialog();
   }
   print_dialog_->UseDefaultSettings();
 
   return OK;
 }
 
 PrintingContext::Result PrintingContextGtk::UpdatePrinterSettings(
-    const DictionaryValue& job_settings, const PageRanges& ranges) {
+    bool target_is_pdf,
+    bool external_preview) {
   DCHECK(!in_print_job_);
+  DCHECK(!external_preview) << "Not implemented";
 
   if (!print_dialog_) {
     print_dialog_ = create_dialog_func_(this);
     print_dialog_->AddRefToDialog();
   }
 
-  if (!print_dialog_->UpdateSettings(job_settings, ranges, &settings_))
+  if (!print_dialog_->UpdateSettings(target_is_pdf, &settings_))
     return OnError();
 
   return OK;
 }
 
 PrintingContext::Result PrintingContextGtk::InitWithSettings(
     const PrintSettings& settings) {
   DCHECK(!in_print_job_);
 
   settings_ = settings;
@@ skipping 49 matching lines @@
   // Intentional No-op.
 }
 
 gfx::NativeDrawingContext PrintingContextGtk::context() const {
   // Intentional No-op.
   return NULL;
 }
 
 }  // namespace printing