Use mojo to connect to BackgroundSyncManager object

content/test/data/background_sync/background_sync_test_helpers.js

 // Copyright 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.
 
 'use strict';
 
 var resultQueue = new ResultQueue();
 var registrationReference = null;
 
 // Sends data back to the test. This must be in response to an earlier
@@ skipping 25 matching lines @@
   navigator.serviceWorker.ready
     .then(function(swRegistration) {
       return swRegistration.sync.register({'tag': tag});
     })
     .then(function(syncRegistration) {
       sendResultToTest('ok - ' + tag + ' registered');
     })
     .catch(sendErrorToTest);
 }
 
+function registerOneShotFromServiceWorker(tag) {
+  navigator.serviceWorker.ready
+    .then(function(swRegistration) {
+      swRegistration.active.postMessage({action: 'registerOneShot', tag: tag});
+      sendResultToTest('ok - ' + tag + ' register sent to SW');
+    })
+    .catch(sendErrorToTest);
+}
+
 function unregisterOneShot(tag) {
   navigator.serviceWorker.ready
     .then(function(swRegistration) {
       return swRegistration.sync.getRegistration(tag);
     })
     .then(function(syncRegistration) {
       if (!syncRegistration) {
         sendResultToTest('error - ' + tag + ' not found');
         return;
       }
@@ skipping 34 matching lines @@
     .then(function(syncRegistration) {
       if (!syncRegistration) {
         sendResultToTest('error - ' + tag + ' not found');
         return;
       }
       sendResultToTest('ok - ' + tag + ' found');
     })
     .catch(sendErrorToTest);
 }
 
+function getRegistrationOneShotFromServiceWorker(tag) {
+  navigator.serviceWorker.ready
+    .then(function(swRegistration) {
+      swRegistration.active.postMessage(
+          {action: 'getRegistrationOneShot', tag: tag});
+      sendResultToTest('ok - getRegistration sent to SW');
+    })
+    .catch(sendErrorToTest);
+}
+
 function getRegistrationsOneShot(tag) {
   navigator.serviceWorker.ready
     .then(function(swRegistration) {
       return swRegistration.sync.getRegistrations();
     })
     .then(function(syncRegistrations) {
       var tags = syncRegistrations.map(function(syncRegistration) {
         return syncRegistration.tag;
       });
       sendResultToTest('ok - ' + tags.toString());
     })
     .catch(sendErrorToTest);
 }
 
+function getRegistrationsOneShotFromServiceWorker() {
+  navigator.serviceWorker.ready
+    .then(function(swRegistration) {
+      swRegistration.active.postMessage({action: 'getRegistrationsOneShot'});
+      sendResultToTest('ok - getRegistrations sent to SW');
+    })
+    .catch(sendErrorToTest);
+}
+
 function completeDelayedOneShot() {
   navigator.serviceWorker.ready
     .then(function(swRegistration) {
       swRegistration.active.postMessage({action: 'completeDelayedOneShot'});
       sendResultToTest('ok - delay completing');
     })
     .catch(sendErrorToTest);
 }
 
 function rejectDelayedOneShot() {
@@ skipping 72 matching lines @@
 };
 
 // Called by native. Immediately sends the next data item to the test if it is
 // available, otherwise sends null.
 ResultQueue.prototype.popImmediately = function() {
   sendResultToTest(this.queue.length ? this.queue.pop() : null);
 };
 
 navigator.serviceWorker.addEventListener('message', function(event) {
   var message = event.data;
-  if (message.type == 'sync')
+  if (message.type == 'sync' || message.type === 'register')
     resultQueue.push(message.data);
-}, false);
+}, false);