Revert 285259 "Avoid processing mutations when ChromeVox active ..."

trunk/src/chrome/browser/resources/chromeos/chromevox/chromevox/injected/active_indicator.js

Index: trunk/src/chrome/browser/resources/chromeos/chromevox/chromevox/injected/active_indicator.js
===================================================================
--- trunk/src/chrome/browser/resources/chromeos/chromevox/chromevox/injected/active_indicator.js	(revision 285298)
+++ trunk/src/chrome/browser/resources/chromeos/chromevox/chromevox/injected/active_indicator.js	(working copy)
@@ -430,8 +430,8 @@
   if (window.getComputedStyle(document.body, null).position != 'static') {
     offsetX = -document.body.getBoundingClientRect().left;
     offsetY = -document.body.getBoundingClientRect().top;
-  } else if (window.getComputedStyle(document.documentElement, null).position !=
-                 'static') {
+  } else if (window.getComputedStyle(document.documentElement, null).position
+                 != 'static') {
     offsetX = -document.documentElement.getBoundingClientRect().left;
     offsetY = -document.documentElement.getBoundingClientRect().top;
   } else {
@@ -828,13 +828,6 @@
 cvox.ActiveIndicator.prototype.createDiv_ = function(
       parent, className, opt_before) {
   var elem = document.createElement('div');
-  elem.setAttribute('aria-hidden', 'true');
-
-  // This allows the MutationObserver used for live regions to quickly
-  // ignore changes to this element rather than doing a lot of calculations
-  // first.
-  elem.setAttribute('cvoxIgnore', '');
-
   elem.className = className;
   if (opt_before) {
     parent.insertBefore(elem, opt_before);