arc: Provide API to control Play Store state from autotests

chrome/test/data/extensions/api_test/autotest_private/test.js

Index: chrome/test/data/extensions/api_test/autotest_private/test.js
diff --git a/chrome/test/data/extensions/api_test/autotest_private/test.js b/chrome/test/data/extensions/api_test/autotest_private/test.js
index 30e470f531f3b44945a1f53fd2376ba4b03d2466..1b5eb697fab225ae04cb0b28cc5eb1fe001ffe0b 100644
--- a/chrome/test/data/extensions/api_test/autotest_private/test.js
+++ b/chrome/test/data/extensions/api_test/autotest_private/test.js
@@ -108,5 +108,17 @@ chrome.test.runTests([
   function getVisibleNotifications() {
     chrome.autotestPrivate.getVisibleNotifications(function(){});
     chrome.test.succeed();
+  },
+  function isPlayStoreEnabled() {
+    chrome.autotestPrivate.isPlayStoreEnabled;
+    chrome.test.succeed();
+  },
+  function isPlayStoreManaged() {
+    chrome.autotestPrivate.isPlayStoreManaged;
+    chrome.test.succeed();
+  },
+  function setPlayStoreEnabled() {
+    chrome.autotestPrivate.setPlayStoreEnabled(true);
+    chrome.test.succeed();
   }
 ]);