Print Preview: Making margin selection sticky (part 1/2).

chrome/browser/resources/print_preview/print_preview.js

 // 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.
 
 // require: cr/ui/print_preview_cloud.js
 
 var localStrings = new LocalStrings();
 
 // If useCloudPrint is true we attempt to connect to cloud print
 // and populate the list of printers with cloud print printers.
@@ skipping 556 matching lines @@
   // means that a pending print to pdf request exists.
   disableInputElementsInSidebar();
   previewArea.showCustomMessage(
       localStrings.getString('printingToPDFInProgress'));
 }
 
 /**
  * Set the default printer. If there is one, generate a print preview.
  * @param {string} printer Name of the default printer. Empty if none.
  * @param {string} cloudPrintData Cloud print related data to restore if
- *                 the default printer is a cloud printer.
+ *     the default printer is a cloud printer.
+ * @param {number} lastUsedMarginsType Indicates the last used margins type
+ *     (matches enum MarginType in printing/print_job_constants.h.
  */
-function setDefaultPrinter(printer_name, cloudPrintData) {
+function setDefaultPrinter(printer_name, cloudPrintData, lastUsedMarginsType) {
+  // Setting the margin selection to the last used one.
+  marginSettings.setLastUsedMarginsType(lastUsedMarginsType);
   // Add a placeholder value so the printer list looks valid.
   addDestinationListOption('', '', true, true, true);
   if (printer_name) {
     defaultOrLastUsedPrinterName = printer_name;
     if (cloudPrintData) {
       cloudprint.setDefaultPrinter(printer_name,
                                    cloudPrintData,
                                    addDestinationListOptionAtPosition,
                                    doUpdateCloudPrinterCapabilities);
     } else {
@@ skipping 503 matching lines @@
 <include src="copies_settings.js"/>
 <include src="header_footer_settings.js"/>
 <include src="layout_settings.js"/>
 <include src="color_settings.js"/>
 <include src="margin_settings.js"/>
 <include src="margin_textbox.js"/>
 <include src="margin_utils.js"/>
 <include src="margins_ui.js"/>
 <include src="margins_ui_pair.js"/>
 <include src="preview_area.js"/>