Fix crash in chrome when trying to print with CUPS down

chrome/browser/printing/print_dialog_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 "chrome/browser/printing/print_dialog_gtk.h"
 
 #include <fcntl.h>
 #include <gtk/gtkunixprint.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ skipping 112 matching lines @@
     page_setup_ = NULL;
   }
   if (printer_) {
     g_object_unref(printer_);
     printer_ = NULL;
   }
 }
 
 void PrintDialogGtk::UseDefaultSettings() {
   DCHECK(!page_setup_);
+  DCHECK(!printer_);
 
   // |gtk_settings_| is a new object.
   gtk_settings_ = gtk_print_settings_new();
-
-  scoped_ptr<GtkPrinterList> printer_list(new GtkPrinterList);
-  printer_ = printer_list->default_printer();
-  if (printer_) {
-    g_object_ref(printer_);
-    gtk_print_settings_set_printer(gtk_settings_,
-                                   gtk_printer_get_name(printer_));
-    page_setup_ = gtk_printer_get_default_page_size(printer_);
-  }
-
-  if (!page_setup_)
-    page_setup_ = gtk_page_setup_new();
+  page_setup_ = gtk_page_setup_new();
 
   // No page range to initialize for default settings.
   PageRanges ranges_vector;
   PrintSettings settings;
   InitPrintSettings(ranges_vector, &settings);
 }
 
 bool PrintDialogGtk::UpdateSettings(const base::DictionaryValue& job_settings,
                                     const printing::PageRanges& ranges,
                                     printing::PrintSettings* settings) {
   bool collate;
   int color;
   bool landscape;
   bool print_to_pdf;
   int copies;
   int duplex_mode;
   std::string device_name;
 
   if (!job_settings.GetBoolean(printing::kSettingLandscape, &landscape) ||
       !job_settings.GetBoolean(printing::kSettingCollate, &collate) ||
       !job_settings.GetInteger(printing::kSettingColor, &color) ||
       !job_settings.GetBoolean(printing::kSettingPrintToPDF, &print_to_pdf) ||
       !job_settings.GetInteger(printing::kSettingDuplexMode, &duplex_mode) ||
       !job_settings.GetInteger(printing::kSettingCopies, &copies) ||
       !job_settings.GetString(printing::kSettingDeviceName, &device_name)) {
     return false;
   }
 
+  bool is_cloud_print = job_settings.HasKey(printing::kSettingCloudPrintId);
+
   if (!gtk_settings_)
     gtk_settings_ = gtk_print_settings_new();
 
-  if (!print_to_pdf) {
+  if (!print_to_pdf && !is_cloud_print) {
     scoped_ptr<GtkPrinterList> printer_list(new GtkPrinterList);
     printer_ = printer_list->GetPrinterWithName(device_name.c_str());
     if (printer_) {
       g_object_ref(printer_);
       gtk_print_settings_set_printer(gtk_settings_,
                                      gtk_printer_get_name(printer_));
       if (!page_setup_) {
         page_setup_ = gtk_printer_get_default_page_size(printer_);
       }
     }
@@ skipping 230 matching lines @@
   // Printing finished. Matches AddRef() in PrintDocument();
   Release();
 }
 
 void PrintDialogGtk::InitPrintSettings(const PageRanges& page_ranges,
                                        PrintSettings* settings) {
   printing::PrintSettingsInitializerGtk::InitPrintSettings(
       gtk_settings_, page_setup_, page_ranges, false, settings);
   context_->InitWithSettings(*settings);
 }