PrintPreview: Added a helper function to get print job settings from dictionary.

printing/printing_context.cc

Index: printing/printing_context.cc
diff --git a/printing/printing_context.cc b/printing/printing_context.cc
index bc9ba210b07dc86bd67d1ad4f72d349d84639c85..390d8f02db746c1151bc1c2c9de1e335abecb0ca 100644
--- a/printing/printing_context.cc
+++ b/printing/printing_context.cc
@@ -1,9 +1,12 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.h"
 
+#include "base/values.h"
+#include "printing/print_job_constants.h"
+
 namespace printing {
 
 PrintingContext::PrintingContext(const std::string& app_locale)
@@ -26,6 +29,19 @@ void PrintingContext::ResetSettings() {
   abort_printing_ = false;
 }
 
+bool PrintingContext::GetSettingsFromDict(const DictionaryValue& settings,
+                                          bool* landscape,
+                                          std::string* printerName) {
+  bool ret = true;
+  if (landscape)
+    ret &= settings.GetBoolean(kSettingLandscape, landscape);
+
+  if (printerName)
+    ret &= settings.GetString(kSettingPrinterName, printerName);
+
+  return ret;
+}
+
 PrintingContext::Result PrintingContext::OnError() {
   ResetSettings();
   return abort_printing_ ? CANCEL : FAILED;