Enable the settings UI to toggle the device ID on Windows.

chrome/test/data/extensions/api_test/preference/standard/test.js

Index: chrome/test/data/extensions/api_test/preference/standard/test.js
diff --git a/chrome/test/data/extensions/api_test/preference/standard/test.js b/chrome/test/data/extensions/api_test/preference/standard/test.js
index db78a663c045b85a69d0de2e1aa9708bc153dbbe..237cc4c00f601c5b9e8d1779916dd04211d77e41 100644
--- a/chrome/test/data/extensions/api_test/preference/standard/test.js
+++ b/chrome/test/data/extensions/api_test/preference/standard/test.js
@@ -50,8 +50,8 @@ function expectFalse(pref) {
 
 function prefGetter(pref) {
   if (pref === 'protectedContentEnabled' && !this[pref]) {
-    // `protectedContentEnabled` is ChromeOS only, so it might not exist when
-    // this test runs, and that's pretty much OK.
+    // `protectedContentEnabled` is Windows/ChromeOS only, so it might not exist
+    // when this test runs, and that's pretty much OK.
     return true;
   }
   this[pref].get({}, expectFalse(pref));
@@ -59,8 +59,8 @@ function prefGetter(pref) {
 
 function prefSetter(pref) {
   if (pref === 'protectedContentEnabled' && !this[pref]) {
-    // `protectedContentEnabled` is ChromeOS only, so it might not exist when
-    // this test runs, and that's pretty much OK.
+    // `protectedContentEnabled` is Windows/ChromeOS only, so it might not exist
+    // when this test runs, and that's pretty much OK.
     return true;
   }
   this[pref].set({value: true}, chrome.test.callbackPass());