PDF Plugin: Add compile targets for a few more files.

chrome/browser/resources/pdf/elements/viewer-page-indicator/viewer-page-indicator.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.
 
 Polymer({
   is: 'viewer-page-indicator',
 
   properties: {
     label: {
       type: String,
       value: '1'
     },
 
     index: {
       type: Number,
       observer: 'indexChanged'
     },
 
     pageLabels: {
       type: Array,
       value: null,
       observer: 'pageLabelsChanged'
     }
   },
 
+  /** @type {number|undefined} */
   timerId: undefined,
 
+  /** @override */
   ready: function() {
     var callback = this.fadeIn.bind(this, 2000);
     window.addEventListener('scroll', function() {
       requestAnimationFrame(callback);
     });
   },
 
   initialFadeIn: function() {
     this.fadeIn(6000);
   },
 
+  /** @param {number} displayTime */
   fadeIn: function(displayTime) {
     var percent = window.scrollY /
         (document.body.scrollHeight -
          document.documentElement.clientHeight);
     this.style.top = percent *
         (document.documentElement.clientHeight - this.offsetHeight) + 'px';
 // <if expr="is_macosx">
     // On the Mac, if overlay scrollbars are enabled, prevent them from
     // overlapping the triangle.
     if (window.innerWidth == document.body.scrollWidth)
@@ skipping 14 matching lines @@
     this.indexChanged();
   },
 
   indexChanged: function() {
     if (this.pageLabels)
       this.label = this.pageLabels[this.index];
     else
       this.label = String(this.index + 1);
   }
 });