Added to options page to let users change keyboard mappings.

chrome/browser/resources/chromeos/switch_access/tree_walker.js

Index: chrome/browser/resources/chromeos/switch_access/tree_walker.js
diff --git a/chrome/browser/resources/chromeos/switch_access/tree_walker.js b/chrome/browser/resources/chromeos/switch_access/tree_walker.js
index 0fd0e32001aec4ed22bd1cc5815ba01650090bf8..fa9913088a0b8fa3123813f5bd9c23607dc17685 100644
--- a/chrome/browser/resources/chromeos/switch_access/tree_walker.js
+++ b/chrome/browser/resources/chromeos/switch_access/tree_walker.js
@@ -145,7 +145,6 @@ AutomationTreeWalker.prototype = {
       return this.getYoungestDescendant_(sibling) || sibling;
 
     // No left-sibling. Return parent if it exists; otherwise return undefined.
-    // return node.parent;
     let parent = node.parent;
     if (parent)
       return parent;