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..00fc4a0e8cb450364ca2e8f7a9bf5d30d81bf5cc 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 +108,22 @@ chrome.test.runTests([
   function getVisibleNotifications() {
     chrome.autotestPrivate.getVisibleNotifications(function(){});
     chrome.test.succeed();
+  },
+  function getPlayStoreState() {
+    chrome.autotestPrivate.getPlayStoreState(function(state) {
+      // By default ARC is not available. Field allowed must be set to false;
+      // managed and enabled should be underfined.
+      chrome.test.assertFalse(state.allowed);
+      chrome.test.assertEq(state.enabled, undefined);
+      chrome.test.assertEq(state.managed, undefined);
+      chrome.test.succeed();
+    });
+  },
+  function setPlayStoreEnabled() {
+    chrome.autotestPrivate.setPlayStoreEnabled(false, function() {
+      // By default ARC is not available.
+      chrome.test.assertTrue(chrome.runtime.lastError != undefined);
+      chrome.test.succeed();
+    });
   }
 ]);