Ensure the OOP PDF page indicator doesn't get displayed if there are no scrollbars.

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 390 matching lines @@
       this.sizer_.style.display = 'none';
       this.toolbar_.style.visibility = 'hidden';
       if (this.passwordScreen_.active) {
         this.passwordScreen_.deny();
         this.passwordScreen_.active = false;
       }
     } else if (progress == 100) {
       // Document load complete.
       if (this.lastViewportPosition_)
         this.viewport_.position = this.lastViewportPosition_;
-      if (!this.isMaterial_)
-        this.pageIndicator_.style.visibility = 'visible';
       this.handleURLParams_();
       this.loaded_ = true;
       this.sendScriptingMessage_({
         type: 'documentLoaded'
       });
       while (this.delayedScriptingMessages_.length > 0)
         this.handleScriptingMessage(this.delayedScriptingMessages_.shift());
     }
   },
 
@@ skipping 179 matching lines @@
     this.toolbar_.style.right = toolbarRight + 'px';
     this.toolbar_.style.bottom = toolbarBottom + 'px';
     // Hide the toolbar if it doesn't fit in the viewport.
     if (this.toolbar_.offsetLeft < 0 || this.toolbar_.offsetTop < 0)
       this.toolbar_.style.visibility = 'hidden';
     else
       this.toolbar_.style.visibility = 'visible';
 
     // Update the page indicator.
     var visiblePage = this.viewport_.getMostVisiblePage();
-    if (this.isMaterial_)
+    if (this.isMaterial_) {
       this.materialToolbar_.pageIndex = visiblePage;
-    else
+    } else {
       this.pageIndicator_.index = visiblePage;
-
-    if (!this.isMaterial_) {
       if (this.documentDimensions_.pageDimensions.length > 1 &&
           hasScrollbars.vertical) {
         this.pageIndicator_.style.visibility = 'visible';
       } else {
         this.pageIndicator_.style.visibility = 'hidden';
       }
     }
 
     var visiblePageDimensions = this.viewport_.getPageScreenRect(visiblePage);
     var size = this.viewport_.size;
@@ skipping 131 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_;
   }
 };