[ServiceWorker] Update formatting for tests.

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

Index: LayoutTests/http/tests/serviceworker/resources/fetch-worker.js
diff --git a/LayoutTests/http/tests/serviceworker/resources/fetch-worker.js b/LayoutTests/http/tests/serviceworker/resources/fetch-worker.js
index c4821f5e1b03cf23ef9d920423ef4615494415d8..5b99dd86b494f9022d7e7ac0dfef225f536ca76d 100644
--- a/LayoutTests/http/tests/serviceworker/resources/fetch-worker.js
+++ b/LayoutTests/http/tests/serviceworker/resources/fetch-worker.js
@@ -73,7 +73,7 @@ async_test(function(t) {
   }, 'Fetch with string body test in ServiceWorkerGlobalScope');
 
 async_test(function(t) {
-    var text = "Test ArrayBuffer";
+    var text = 'Test ArrayBuffer';
     var array = new Uint8Array(text.length);
     for (var i = 0; i < text.length; ++i)
       array[i] = text.charCodeAt(i);
@@ -91,7 +91,7 @@ async_test(function(t) {
   }, 'Fetch with ArrayBuffer body test in ServiceWorkerGlobalScope');
 
 async_test(function(t) {
-    var text = "Test ArrayBufferView";
+    var text = 'Test ArrayBufferView';
     var array = new Uint8Array(text.length);
     for (var i = 0; i < text.length; ++i)
       array[i] = text.charCodeAt(i);
@@ -116,7 +116,7 @@ async_test(function(t) {
     formData.append('FileKey',
                     new File(['file content'], 'file.dat'));
     var request = new Request('fetch-access-control.php',
-                          {method: 'POST', body: formData});
+                              {method: 'POST', body: formData});
     fetch(request)
       .then(function(response) { return response.text(); })
       .then(evalJsonp)
@@ -147,4 +147,4 @@ test(function(t) {
     runInfiniteFetchLoop();
   },
   'Destroying the execution context while fetch is happening should not ' +
-      'cause a crash.');
+  'cause a crash.');