Adds support for dynamically setting the title

components/dom_distiller/core/javascript/dom_distiller_viewer.js

 // Copyright 2014 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 addToPage(html) {
   var div = document.createElement('div');
   div.innerHTML = html;
   document.getElementById('content').appendChild(div);
   fillYouTubePlaceholders();
 }
@@ skipping 22 matching lines @@
     parent.replaceChild(container, placeholders[i]);
   }
 }
 
 function showLoadingIndicator(isLastPage) {
   document.getElementById('loadingIndicator').className =
       isLastPage ? 'hidden' : 'visible';
   updateLoadingIndicator(isLastPage);
 }
 
+// Sets the title. The title will be exposed with a simple animation. This
+// should only be used when the title was not included in the initial html.
+function setTitle(title) {
+  var holder = document.getElementById('titleHolder');
+  var collapse = document.getElementById('titleCollapse');
+
+  collapse.style.height = "0px";
+
+  holder.textContent = title;
+  var newHeight = Math.max(90, holder.getBoundingClientRect().height);
+
+  collapse.style.transition = "height 0.2s";
+  collapse.style.height = newHeight + "px";
+}
+
 // Maps JS Font Family to CSS class and then changes body class name.
 // CSS classes must agree with distilledpage.css.
 function useFontFamily(fontFamily) {
   var cssClass;
   if (fontFamily == "serif") {
     cssClass = "serif";
   } else if (fontFamily == "monospace") {
     cssClass = "monospace";
   } else {
     cssClass = "sans-serif";
@@ skipping 84 matching lines @@
 document.getElementById('feedbackNo').addEventListener('click', function(e) {
   sendFeedback(false);
   document.getElementById('feedbackContainer').className += " fadeOut";
 }, true);
 
 document.getElementById('feedbackContainer').addEventListener('animationend',
     function(e) {
       document.getElementById('feedbackContainer').style.display = "none";
     }, true);