Initial support for accessible text fields and focus tracking in ARC++

chrome/browser/resources/chromeos/chromevox/common/chromevox_json.js

Index: chrome/browser/resources/chromeos/chromevox/common/chromevox_json.js
diff --git a/chrome/browser/resources/chromeos/chromevox/common/chromevox_json.js b/chrome/browser/resources/chromeos/chromevox/common/chromevox_json.js
index 96c78ca9f31ed05da13d6217c3e39d17f5846233..6f65d54f1816a2755d3cd53003e0602adf0e5b40 100644
--- a/chrome/browser/resources/chromeos/chromevox/common/chromevox_json.js
+++ b/chrome/browser/resources/chromeos/chromevox/common/chromevox_json.js
@@ -55,9 +55,9 @@ if (window.JSON && window.JSON.toString() == '[object JSON]') {
                 f(this.getUTCSeconds()) + 'Z' : 'null';
       };
 
-      String.prototype.toJSON =
+      Boolean.prototype.toJSON =

[hidehiko, 2017/03/21 03:43:23]

nit: ditto. Unnecessary change?

[David Tseng, 2017/03/21 16:41:16]

This is actually needed. It fixes a presubmit error. These usually happen
because of an upgrade to Closure or someone changed an extern. In this case,
we're basically just getting the presubmit to pass. This file will be deleted as
part of moving everything to ChromeVox Next.

       Number.prototype.toJSON =
-      Boolean.prototype.toJSON = function(key) {
+      String.prototype.toJSON = function(key) {
         return /** @type {string} */ (this.valueOf());
       };
     }