Hookup print and save buttons in the out of process PDF plugin

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.
 
 (function() {
 
 <include src="../../../../ui/webui/resources/js/util.js"></include>
 <include src="viewport.js"></include>
 
 // The plugin element is sized to fill the entire window and is set to be fixed
@@ skipping 14 matching lines @@
 
 // The progress bar element.
 var viewerProgressBar;
 
 // The viewport object.
 var viewport;
 
 // The document dimensions.
 var documentDimensions;
 
+// Notify the plugin to print.
+function print() {
+  plugin.postMessage({
+    type: 'print',
+  });
+}
+
 // Returns true if the fit-to-page button is enabled.
 function isFitToPageEnabled() {
   return $('fit-to-page-button').classList.contains('polymer-selected');
 }
 
 function updateProgress(progress) {
   viewerProgressBar.progress = progress;
   if (progress == -1) {
     // Document load failed.
     sizer.style.display = 'none';
@@ skipping 55 matching lines @@
   viewport = new Viewport(window,
                           sizer,
                           isFitToPageEnabled,
                           viewportChangedCallback);
 
   // Create the plugin object dynamically so we can set its src.
   plugin = document.createElement('object');
   plugin.id = 'plugin';
   plugin.type = 'application/x-google-chrome-pdf';
   plugin.addEventListener('message', handleMessage, false);
-  // The pdf location is passed in the document url in the format:
-  // http://<.../pdf.html>?<pdf location>.
-  var url = window.location.search.substring(1);
-  plugin.setAttribute('src', url);
+  // The pdf location is passed in stream details in the background page.
+  var streamDetails = chrome.extension.getBackgroundPage().getStreamDetails();
+  plugin.setAttribute('src', streamDetails.streamURL);
   document.body.appendChild(plugin);
 
   // Setup the button event listeners.
   $('fit-to-width-button').addEventListener('click',
       viewport.fitToWidth.bind(viewport));
   $('fit-to-page-button').addEventListener('click',
       viewport.fitToPage.bind(viewport));
   $('zoom-in-button').addEventListener('click',
       viewport.zoomIn.bind(viewport));
   $('zoom-out-button').addEventListener('click',
       viewport.zoomOut.bind(viewport));
+  $('save-button-link').href = streamDetails.originalURL;
+  $('print-button').addEventListener('click', print);
+
 
   // Setup keyboard event listeners.
   document.onkeydown = function(e) {
     switch (e.keyCode) {
       case 37:  // Left arrow key.
         // Go to the previous page if there are no horizontal scrollbars.
         if (!viewport.documentHasScrollbars().x) {
           viewport.goToPage(viewport.getMostVisiblePage() - 1);
           // Since we do the movement of the page
           e.preventDefault();
@@ skipping 20 matching lines @@
           e.preventDefault();
         }
         return;
     }
   };
 }
 
 load();
 
 })();