Handle ctrl + shift + left click on links in PDF.

chrome/browser/resources/pdf/pdf.js

 // Copyright 2013 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.
 
 'use strict';
 
 /**
  * @return {number} Width of a scrollbar in pixels
  */
 function getScrollbarWidth() {
@@ skipping 38 matching lines @@
 function onNavigateInCurrentTab(isInTab, isSourceFileUrl, url) {
   // When the PDFviewer is inside a browser tab, prefer the tabs API because
   // it can navigate from one file:// URL to another.
   if (chrome.tabs && isInTab && isSourceFileUrl)
     chrome.tabs.update({url: url});
   else
     window.location.href = url;
 }
 
 /**
- * Called when navigation happens in the new background tab.
- * @param {string} url The url to be opened in the new background tab.
+ * Called when navigation happens in the new tab.
+ * @param {string} url The url to be opened in the new tab.
+ * @param {boolean} active Indicates if the new tab should be the active tab.
  */
-function onNavigateInNewBackgroundTab(url) {
+function onNavigateInNewTab(url, active) {
   // Prefer the tabs API because it guarantees we can just open a new tab.
   // window.open doesn't have this guarantee.
   if (chrome.tabs)
-    chrome.tabs.create({url: url, active: false});
+    chrome.tabs.create({url: url, active: active});
   else
     window.open(url);
 }
 
 /**
  * Whether keydown events should currently be ignored. Events are ignored when
  * an editable element has focus, to allow for proper editing controls.
  * @param {HTMLElement} activeElement The currently selected DOM node.
  * @return {boolean} True if keydown events should be ignored.
  */
@@ skipping 154 matching lines @@
 
     this.toolbar_.docTitle =
         getFilenameFromURL(this.originalUrl_);
   }
 
   document.body.addEventListener('change-page', function(e) {
     this.viewport_.goToPage(e.detail.page);
   }.bind(this));
 
   document.body.addEventListener('navigate', function(e) {
-    this.navigator_.navigate(e.detail.uri, e.detail.newtab);
+    var option =
+        e.detail.newtab ? Navigator.NavigateOption.OPEN_IN_NEW_BACKGROUND_TAB :
+                          Navigator.NavigateOption.OPEN_IN_CURRENT_TAB;
+    this.navigator_.navigate(e.detail.uri, option);
   }.bind(this));
 
   this.toolbarManager_ =
       new ToolbarManager(window, this.toolbar_, this.zoomToolbar_);
 
   // Set up the ZoomManager.
   this.zoomManager_ = new ZoomManager(
       this.viewport_, this.browserApi_.setZoom.bind(this.browserApi_),
       this.browserApi_.getInitialZoom());
   this.browserApi_.addZoomEventListener(
       this.zoomManager_.onBrowserZoomChange.bind(this.zoomManager_));
 
   // Setup the keyboard event listener.
   document.addEventListener('keydown', this.handleKeyEvent_.bind(this));
   document.addEventListener('mousemove', this.handleMouseEvent_.bind(this));
   document.addEventListener('mouseout', this.handleMouseEvent_.bind(this));
 
   var isInTab = this.browserApi_.getStreamInfo().tabId != -1;
   var isSourceFileUrl =
       this.originalUrl_.indexOf('file://') == 0;
   this.navigator_ = new Navigator(this.originalUrl_,
                                   this.viewport_, this.paramsParser_,
                                   onNavigateInCurrentTab.bind(undefined,
                                                               isInTab,
                                                               isSourceFileUrl),
-                                  onNavigateInNewBackgroundTab);
+                                  onNavigateInNewTab);
   this.viewportScroller_ =
       new ViewportScroller(this.viewport_, this.plugin_, window);
 
   // Request translated strings.
   chrome.resourcesPrivate.getStrings('pdf', this.handleStrings_.bind(this));
 }
 
 PDFViewer.prototype = {
   /**
    * @private
@@ skipping 342 matching lines @@
         this.sendScriptingMessage_(message.data);
         break;
       case 'goToPage':
         this.viewport_.goToPage(message.data.page);
         break;
       case 'loadProgress':
         this.updateProgress_(message.data.progress);
         break;
       case 'navigate':
         // If in print preview, always open a new tab.
-        if (this.isPrintPreview_)
-          this.navigator_.navigate(message.data.url, true);
-        else
-          this.navigator_.navigate(message.data.url, message.data.newTab);
+        if (this.isPrintPreview_) {
+          this.navigator_.navigate(
+              message.data.url,
+              Navigator.NavigateOption.OPEN_IN_NEW_BACKGROUND_TAB);
+        } else {
+          this.navigator_.navigate(message.data.url, message.data.option);
+        }
         break;
       case 'setScrollPosition':
         var position = this.viewport_.position;
         if (message.data.x !== undefined)
           position.x = message.data.x;
         if (message.data.y !== undefined)
           position.y = message.data.y;
         this.viewport_.position = position;
         break;
       case 'cancelStreamUrl':
@@ skipping 234 matching lines @@
    * Each bookmark is an Object containing a:
    * - title
    * - page (optional)
    * - array of children (themselves bookmarks)
    * @type {Array} the top-level bookmarks of the PDF.
    */
   get bookmarks() {
     return this.bookmarks_;
   }
 };