Fix AccessibilityExtensionLoader's handling of locked screen

chrome/browser/resources/chromeos/chromevox/cvox2/background/background.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.
 
 /**
  * @fileoverview The entry point for all ChromeVox2 related code for the
  * background page.
  */
 
 goog.provide('Background');
@@ skipping 70 matching lines @@
     '*docs.google.com/spreadsheets/*',
     '*docs.google.com/presentation/*'
   ]);
 
   /**
    * @type {cursors.Range}
    * @private
    */
   this.currentRange_ = null;
 
-  /**
-   * @type {cursors.Range}
-   * @private
-   */
-  this.savedRange_ = null;
-
   // Manually bind all functions to |this|.
   for (var func in this) {
     if (typeof(this[func]) == 'function')
       this[func] = this[func].bind(this);
   }
 
   /** @type {!cvox.AbstractEarcons} @private */
   this.classicEarcons_ = cvox.ChromeVox.earcons || new cvox.ClassicEarcons();
 
   /** @type {!cvox.AbstractEarcons} @private */
@@ skipping 42 matching lines @@
   });
 
   cvox.ExtensionBridge.addMessageListener(this.onMessage_);
 
   /** @type {!BackgroundKeyboardHandler} @private */
   this.keyboardHandler_ = new BackgroundKeyboardHandler();
 
   /** @type {!LiveRegions} @private */
   this.liveRegions_ = new LiveRegions(this);
 
-  /** @type {boolean} @private */
-  this.inExcursion_ = false;
-
   /**
    * Stores the mode as computed the last time a current range was set.
    * @type {?ChromeVoxMode}
    * @private
    */
   this.mode_ = null;
 
   chrome.accessibilityPrivate.onAccessibilityGesture.addListener(
       this.onAccessibilityGesture_);
 
@@ skipping 218 matching lines @@
   getCurrentRange: function() {
     if (this.currentRange_ && this.currentRange_.isValid())
       return this.currentRange_;
     return null;
   },
 
   /**
    * @override
    */
   setCurrentRange: function(newRange) {
-    if (!this.inExcursion_ && newRange)
-      this.savedRange_ = new cursors.Range(newRange.start, newRange.end);
-
     if (newRange && !newRange.isValid())
       return;
 
     this.currentRange_ = newRange;
     var oldMode = this.mode_;
     var newMode = this.getMode();
     if (oldMode != newMode) {
       this.onModeChanged_(newMode, oldMode);
       this.mode_ = newMode;
     }
@@ skipping 435 matching lines @@
   return new RegExp('^(' + globs.map(function(glob) {
     return glob.replace(/[.+^$(){}|[\]\\]/g, '\\$&')
         .replace(/\*/g, '.*')
         .replace(/\?/g, '.');
   }).join('|') + ')$');
 };
 
 new Background();
 
 });  // goog.scope