Revert of Reland #2: Ensure WebView notifies desktop automation

chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_util.js

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_util.js
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_util.js b/chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_util.js
index 16f7506bb8105264199e695126d823c3a9de0ab6..d5d9956f345141a1a4dd2edde5f88132d37f01f4 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_util.js
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_util.js
@@ -88,12 +88,8 @@
   while (cur) {
     var next = dir == Dir.BACKWARD ?
         cur.previousSibling : cur.nextSibling;
-    if (!AutomationUtil.isInSameTree(cur, next))
-      return null;
     if (next)
       return next;
-    if (!AutomationUtil.isInSameTree(cur, cur.parent))
-      return null;
     cur = cur.parent;
   }
 };
@@ -168,10 +164,6 @@
   var candidate = node;
   while (candidate) {
     ret.push(candidate);
-
-    if (!AutomationUtil.isInSameTree(candidate, candidate.parent))
-      break;
-
     candidate = candidate.parent;
   }
   return ret.reverse();
@@ -234,17 +226,4 @@
   return divA.indexInParent <= divB.indexInParent ? Dir.FORWARD : Dir.BACKWARD;
 };
 
-/**
- * Determines whether the two given nodes come from the same tree source.
- * @param {AutomationNode} a
- * @param {AutomationNode} b
- * @return {boolean}
- */
-AutomationUtil.isInSameTree = function(a, b) {
-  if (!a || !b)
-    return true;
-
-  return a.root === b.root;
-};
-
 });  // goog.scope