PrintPreview: Print Preview is not staying associated with initiator renderer.

chrome/browser/resources/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.
 
 var localStrings = new LocalStrings();
 
 // The total page count of the previewed document regardless of which pages the
 // user has selected.
 var totalPageCount = -1;
 
@@ skipping 12 matching lines @@
 // Used to disable some printing options when the preview is not modifiable.
 var previewModifiable = false;
 
 // Destination list special value constants.
 const PRINT_TO_PDF = 'Print To PDF';
 const MANAGE_PRINTERS = 'Manage Printers';
 
 // State of the print preview settings.
 var printSettings = new PrintSettings();
 
+// Preview UI identifier.
+var previewUIIdentifier = null;
+
 /**
  * Window onload handler, sets up the page and starts print preview by getting
  * the printer list.
  */
 function onLoad() {
   $('system-dialog-link').addEventListener('click', showSystemDialog);
   $('cancel-button').addEventListener('click', handleCancelButtonClick);
 
   if (!checkCompatiblePluginExists()) {
     displayErrorMessage(localStrings.getString('noPlugin'), false);
@@ skipping 443 matching lines @@
   updateCopiesButtonsState();
 }
 
 /**
  * Update the print preview when new preview data is available.
  * Create the PDF plugin as needed.
  * Called from PrintPreviewUI::PreviewDataIsAvailable().
  * @param {number} pageCount The expected total pages count.
  * @param {string} jobTitle The print job title.
  * @param {boolean} modifiable If the preview is modifiable.
- *
+ * @param {string} previewUIId Preview UI identifier.
  */
-function updatePrintPreview(pageCount, jobTitle, modifiable) {
+function updatePrintPreview(pageCount, jobTitle, modifiable, previewUIId) {
   var tempPrintSettings = new PrintSettings();
   tempPrintSettings.save();
-
   previewModifiable = modifiable;
 
   if (totalPageCount == -1)
     totalPageCount = pageCount;
 
   if (previouslySelectedPages.length == 0)
     for (var i = 0; i < totalPageCount; i++)
       previouslySelectedPages.push(i+1);
 
   if (printSettings.deviceName != tempPrintSettings.deviceName) {
@@ skipping 10 matching lines @@
       return;
     }
   }
 
   if (getSelectedPagesValidityLevel() != 1)
     pageRangesFieldChanged();
 
   // Update the current tab title.
   document.title = localStrings.getStringF('printPreviewTitleFormat', jobTitle);
 
+  // Store the preview tab identifier.
+  previewUIIdentifier = previewUIId;
+
   createPDFPlugin();
   updatePrintSummary();
   updatePrintButtonState();
   addEventListeners();
 }
 
 /**
  * Create the PDF plugin or reload the existing one.
  */
 function createPDFPlugin() {
@@ skipping 12 matching lines @@
       pdfViewer.goToPage('0');
     }
     pdfViewer.reload();
     pdfViewer.grayscale(!isColor());
     return;
   }
 
   var pdfPlugin = document.createElement('embed');
   pdfPlugin.setAttribute('id', 'pdf-viewer');
   pdfPlugin.setAttribute('type', 'application/pdf');
-  pdfPlugin.setAttribute('src', 'chrome://print/print.pdf');
+  pdfPlugin.setAttribute('src',
+                         'chrome://print/print.pdf/' + previewUIIdentifier);
   var mainView = $('mainview');
   mainView.appendChild(pdfPlugin);
   pdfPlugin.onload('onPDFLoad()');
 
   // Older version of the PDF plugin may not have this method.
   // TODO(thestig) Eventually remove this check.
   if (pdfPlugin.removePrintButton) {
     pdfPlugin.removePrintButton();
   }
 
@@ skipping 410 matching lines @@
   this.isLandscape = '';
 }
 
 /**
  * Takes a snapshot of the print settings.
  */
 PrintSettings.prototype.save = function() {
   this.deviceName = getSelectedPrinterName();
   this.isLandscape = isLandscape();
 }