Check in animation policy extension.

ui/accessibility/extensions/animation/popup.js

Index: ui/accessibility/extensions/animation/popup.js
diff --git a/ui/accessibility/extensions/animation/popup.js b/ui/accessibility/extensions/animation/popup.js
new file mode 100644
index 0000000000000000000000000000000000000000..a15d27780dd943d353204f338a93af90cea1a26d
--- /dev/null
+++ b/ui/accessibility/extensions/animation/popup.js
@@ -0,0 +1,44 @@
+// Copyright (c) 2015 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.
+
+function animationPolicyChanged() {
+  if (this.checked) {
+    var type = this.id;
+    var setting = this.value;
+    console.log('set policy '+': '+setting);

[je_julie(Not used), 2015/04/29 09:15:37]

At the beginning, I added that to make sure whether it works correctly or not.
When I checked other accessibility extensions from ui/accessibility/extensions,
only colorenhancer has console.log as debugPrint with IS_DEV_MODE option.
It seems to check unpacked extension.
Is it OK with console log to release?

[dmazzoni, 2015/04/29 20:06:16]

It's okay. It will only show up in the popup background page, and since it only
happens when you pop up or change the value, it's harmless (and helpful for
debugging).

+    chrome.accessibilityFeatures.animationPolicy.set(
+        {'value': setting}, function (callback) {});
+  }
+}
+
+function listener(data) {
+  console.log('animation policy is changed.');

[je_julie(Not used), 2015/04/29 09:15:37]

ditto.

+}
+
+function init() {
+  var i18nElements = document.querySelectorAll('*[i18n-content]');
+  for (var i = 0; i < i18nElements.length; i++) {
+    var elem = i18nElements[i];
+    var msg = elem.getAttribute('i18n-content');
+    elem.innerHTML = chrome.i18n.getMessage(msg);
+  }
+
+  chrome.accessibilityFeatures.animationPolicy.onChange.addListener(listener);
+  chrome.accessibilityFeatures.animationPolicy.get(
+        {'incognito': false}, function (policy) {
+                  console.log('get policy '+': '+policy.value);
+      var selects = document.querySelectorAll('input');
+      for (var i = 0; i < selects.length; i++) {
+        if (selects[i].value == policy.value)
+          selects[i].checked = true;
+      }
+    });
+
+  var selects = document.querySelectorAll('input');
+  for (var i = 0; i < selects.length; i++) {
+    selects[i].addEventListener('change', animationPolicyChanged);
+  }
+}
+
+window.addEventListener('load', init, false);