Ensure the OOP PDF progress bar segments are visible

chrome/browser/resources/pdf/elements/viewer-progress-bar/viewer-progress-bar.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('viewer-progress-bar', {
   progress: 0,
   text: 'Loading',
   numSegments: 8,
   segments: [],
   ready: function() {
     this.numSegmentsChanged();
   },
   progressChanged: function() {
     var numVisible = this.progress * this.segments.length / 100.0;
     for (var i = 0; i < this.segments.length; i++) {
       this.segments[i].style.visibility =
-          i < numVisible ? 'auto' : 'hidden';
+          i < numVisible ? 'inherit' : 'hidden';
     }
 
     if (this.progress >= 100 || this.progress < 0)
       this.style.opacity = 0;
   },
   numSegmentsChanged: function() {
     // Clear the existing segments.
     this.segments = [];
     var segmentsElement = this.$.segments;
     segmentsElement.innerHTML = '';
 
     // Create the new segments.
     var segment = document.createElement('li');
     segment.classList.add('segment');
     var angle = 360 / this.numSegments;
     for (var i = 0; i < this.numSegments; ++i) {
       var segmentCopy = segment.cloneNode(true);
       segmentCopy.style.webkitTransform =
           'rotate(' + (i * angle) + 'deg) skewY(' +
           -1 * (90 - angle) + 'deg)';
       segmentsElement.appendChild(segmentCopy);
       this.segments.push(segmentCopy);
     }
     this.progressChanged();
   }
 });