Print Preview: Populating print preview tab title as soon as it is known.

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 119 matching lines @@
   printHeader.addEventListeners();
   pageSettings.addEventListeners();
   copiesSettings.addEventListeners();
   headerFooterSettings.addEventListeners();
   layoutSettings.addEventListeners();
   marginSettings.addEventListeners();
   colorSettings.addEventListeners();
   $('printer-list').onchange = updateControlsWithSelectedPrinterCapabilities;
 
   showLoadingAnimation();
+  chrome.send('getInitiatorTabTitle');
   chrome.send('getDefaultPrinter');
 }
 
 /**
  * Disables the input elements in the sidebar.
  */
 function disableInputElementsInSidebar() {
   var els = $('sidebar').querySelectorAll('input, button, select');
   for (var i = 0; i < els.length; i++)
     els[i].disabled = true;
@@ skipping 739 matching lines @@
 }
 
 /**
  * Update the page count and check the page range.
  * Called from PrintPreviewUI::OnDidGetPreviewPageCount().
  * @param {number} pageCount The number of pages.
  * @param {boolean} isModifiable Indicates whether the previewed document can be
  *     modified.
  * @param {number} previewResponseId The preview request id that resulted in
  *     this response.
- * @param {string} jobTitle The print job title
  */
-function onDidGetPreviewPageCount(pageCount, isModifiable, previewResponseId,
-                                  jobTitle) {
+function onDidGetPreviewPageCount(pageCount, isModifiable, previewResponseId) {
   if (!isExpectedPreviewResponse(previewResponseId))
     return;
   pageSettings.updateState(pageCount);
   previewModifiable = isModifiable;
-  document.title = localStrings.getStringF('printPreviewTitleFormat', jobTitle);
   if (!previewModifiable && pageSettings.requestPrintPreviewIfNeeded())
     return;
 
   cr.dispatchSimpleEvent(document, 'updateSummary');
 }
 
 function onDidGetDefaultPageLayout(pageLayout) {
   // TODO(aayushkumar): Do something here!
 }
 
@@ skipping 161 matching lines @@
 
 /**
  *  Takes a snapshot of the print settings.
  */
 PrintSettings.prototype.save = function() {
   this.deviceName = getSelectedPrinterName();
   this.isLandscape = layoutSettings.isLandscape();
   this.hasHeaderFooter = headerFooterSettings.hasHeaderFooter();
 }
 
+/**
+ * Updates the title of the print preview tab according to |initiatorTabTitle|.
+ * Called from PrintPreviewUI::OnGetInitiatorTabTitle as a result of sending a
+ * 'getInitiatorTabTitle' message.
+ * @param {string} initiatorTabTitle The title of the initiator tab.
+ */
+function setInitiatorTabTitle(initiatorTabTitle) {
+  if (initiatorTabTitle == '')
+    return;
+  document.title = localStrings.getStringF(
+      'printPreviewTitleFormat', initiatorTabTitle);
+}
+
 /// Pull in all other scripts in a single shot.
 <include src="print_preview_animations.js"/>
 <include src="print_preview_cloud.js"/>
 <include src="print_preview_utils.js"/>
 <include src="print_header.js"/>
 <include src="page_settings.js"/>
 <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"/>