Make sure the PDF material toolbar gets hidden after loading.

chrome/browser/resources/pdf/ui_manager.js

 // Copyright 2015 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';
 
 var HIDE_TIMEOUT = 2000;
 
 /**
  * Creates a UI Manager to handle transitioning of toolbars and panes.
@@ skipping 17 matching lines @@
 UiManager.prototype = {
   /**
    * @private
    * Display the toolbar and any pane that was previously opened.
    */
   showUi_: function() {
     this.toolbar_.show();
     for (var i = 0; i < this.panes_.length; i++)
       this.panes_[i].showIfOpenedByUser();
 
-    if (this.uiTimeout_)
-      clearTimeout(this.uiTimeout_);
-    this.uiTimeout_ = setTimeout(this.hideUi_.bind(this), HIDE_TIMEOUT);
+    this.hideUiAfterTimeout();
   },
 
   /**
    * @private
    * Hide the toolbar and any pane that was previously opened.
    */
   hideUi_: function() {
     this.toolbar_.hide();
     for (var i = 0; i < this.panes_.length; i++)
       this.panes_[i].hideIfOpenedByUser();
+  },
+
+  /**
+   * @private

[Sam McNally, 2015/03/02 02:25:39]

Remove.

+   * Hide the toolbar after the HIDE_TIMEOUT has elapsed.
+   */
+  hideUiAfterTimeout: function() {
+    if (this.uiTimeout_)
+      clearTimeout(this.uiTimeout_);
+    this.uiTimeout_ = setTimeout(this.hideUi_.bind(this), HIDE_TIMEOUT);
   }
 };