Hook up the other Background Fetch Mojo methods with the system

third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-manager-get.https.html

Index: third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-manager-get.https.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-manager-get.https.html b/third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-manager-get.https.html
index f547bcd1c62f8d9e2b2d64bcb075dd6bac4961ba..fcdd961b13a11d7e499a051ed7bb2dbd7d4b44b2 100644
--- a/third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-manager-get.https.html
+++ b/third_party/WebKit/LayoutTests/http/tests/background_fetch/background-fetch-manager-get.https.html
@@ -42,4 +42,71 @@ promise_test(function(test) {
     });
 
 }, 'BackgroundFetchManager.get() returns NULL for non-existing fetches.');
+
+promise_test(function(test) {
+  const tag = 'my-tag';
+  const options = {
+    icons: [
+      {
+        src: 'resources/non-existing-large-icon.png',
+        sizes: '256x256',
+        type: 'image/png'
+      },
+      {
+        src: 'resources/non-existing-small-icon.jpg',
+        sizes: '64x64',
+        type: 'image/jpg'
+      }
+    ],
+    title: 'My Background Fetch',
+    totalDownloadSize: 1024
+  };
+
+  let registration = null;
+
+  return service_worker_unregister_and_register(test, workerUrl, scope)
+    .then(r => {
+      registration = r;
+      return wait_for_state(test, r.installing, 'activated');
+    })
+    .then(() => registration.backgroundFetch.fetch(tag, ['resources/non-existing-file.png'], options))
+    .then(backgroundFetchRegistration => {
+      assert_true(backgroundFetchRegistration instanceof BackgroundFetchRegistration);
+
+      return registration.backgroundFetch.get(tag)
+        .then(secondBackgroundFetchRegistration => {
+          assert_true(secondBackgroundFetchRegistration instanceof BackgroundFetchRegistration);
+          assert_equals(secondBackgroundFetchRegistration.tag, tag);
+          assert_object_equals(secondBackgroundFetchRegistration.icons, options.icons);
+          assert_equals(secondBackgroundFetchRegistration.totalDownloadSize, options.totalDownloadSize);
+          assert_equals(secondBackgroundFetchRegistration.title, options.title);
+        });
+    });
+}, 'BackgroundFetchManager.get() can return created fetches.');
+
+promise_test(function(test) {
+  const tag = 'my-tag';
+
+  let registration = null;
+
+  return service_worker_unregister_and_register(test, workerUrl, scope)
+    .then(r => {
+      registration = r;
+      return wait_for_state(test, r.installing, 'activated');
+    })
+    .then(() => registration.backgroundFetch.fetch(tag, ['resources/non-existing-file.png']))
+    .then(backgroundFetchRegistration => {
+      assert_true(backgroundFetchRegistration instanceof BackgroundFetchRegistration);
+      return registration.backgroundFetch.get(tag);
+    })
+    .then(secondBackgroundFetchRegistration => {
+      assert_true(secondBackgroundFetchRegistration instanceof BackgroundFetchRegistration);
+      return secondBackgroundFetchRegistration.abort();
+    })
+    .then(() => registration.backgroundFetch.get(tag))
+    .then(thirdBackgroundFetchRegistration => {
+      assert_equals(thirdBackgroundFetchRegistration, null);
+    });
+
+}, 'BackgroundFetchManager.get() returned fetches can be aborted.');
 </script>