Print Preview: Handle a crashed initiator tab by showing a message in PP.

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 131 matching lines @@
  */
 function launchNativePrintDialog() {
   showingSystemDialog = true;
   $('error-button').disabled = true;
   $('native-print-dialog-throbber').classList.remove('hidden');
   chrome.send('showSystemDialog');
 }
 
 /**
  * Disables the controls which need the initiator tab to generate preview
+ * data. This function is called when the initiator tab has crashed.
+ * @param {string} initiatorTabURL The URL of the initiator tab.
+ */
+function onInitiatorTabCrashed(initiatorTabURL) {
+  disableInputElementsInSidebar();
+  displayErrorMessageWithButton(
+      localStrings.getString('initiatorTabCrashed'),
+      localStrings.getString('reopenPage'),
+      function() { chrome.send('reloadCrashedInitiatorTab'); });
+}
+
+/**
+ * Disables the controls which need the initiator tab to generate preview
  * data. This function is called when the initiator tab is closed.
  * @param {string} initiatorTabURL The URL of the initiator tab.
  */
 function onInitiatorTabClosed(initiatorTabURL) {
   disableInputElementsInSidebar();
   displayErrorMessageWithButton(
       localStrings.getString('initiatorTabClosed'),
       localStrings.getString('reopenPage'),
       function() { window.location = initiatorTabURL; });
 }
@@ skipping 777 matching lines @@
 
 /// 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="layout_settings.js"/>
 <include src="color_settings.js"/>