Import w3c tests for the service workers

third_party/WebKit/LayoutTests/imported/wpt/service-workers/service-worker/resources/claim-worker.js

Index: third_party/WebKit/LayoutTests/imported/wpt/service-workers/service-worker/resources/claim-worker.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/claim-worker.js b/third_party/WebKit/LayoutTests/imported/wpt/service-workers/service-worker/resources/claim-worker.js
similarity index 88%
copy from third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/claim-worker.js
copy to third_party/WebKit/LayoutTests/imported/wpt/service-workers/service-worker/resources/claim-worker.js
index a0e1ac831ecbdd7c6d45e07fcf8e48f2f624d557..317feb1a02d2d0060ef02c427becc22ff9769be2 100644
--- a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/claim-worker.js
+++ b/third_party/WebKit/LayoutTests/imported/wpt/service-workers/service-worker/resources/claim-worker.js
@@ -1,5 +1,5 @@
 self.addEventListener('message', function(event) {
-    event.waitUntil(self.clients.claim()
+    self.clients.claim()
       .then(function(result) {
           if (result !== undefined) {
               event.data.port.postMessage(
@@ -10,5 +10,5 @@ self.addEventListener('message', function(event) {
         })
       .catch(function(error) {
           event.data.port.postMessage('FAIL: exception: ' + error.name);
-        }));
+        });
   });