[ServiceWorker] Update formatting for tests.

LayoutTests/http/tests/serviceworker/resources/worker-testharness.js

Index: LayoutTests/http/tests/serviceworker/resources/worker-testharness.js
diff --git a/LayoutTests/http/tests/serviceworker/resources/worker-testharness.js b/LayoutTests/http/tests/serviceworker/resources/worker-testharness.js
index 6767dadf7b4941d99feede23804d1ac6cec2ecb0..8c839e7af56a989b0ce238d27f9cce45eebdf601 100644
--- a/LayoutTests/http/tests/serviceworker/resources/worker-testharness.js
+++ b/LayoutTests/http/tests/serviceworker/resources/worker-testharness.js
@@ -106,7 +106,7 @@ importScripts('/resources/testharness.js');
 //    }, "Some Cache test");
 function cache_test(test_function, description) {
   promise_test(function(test) {
-    return create_temporary_cache(test)
+      return create_temporary_cache(test)
         .then(test_function);
-  }, description);
+    }, description);
 }