ServiceWorker: Store the existence of fetch event handler

content/browser/service_worker/service_worker_browsertest.cc

 // Copyright 2014 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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <utility>
@@ skipping 633 matching lines @@
         base::Bind(&self::DispatchInstallEventOnIOThread, this, done, result),
         CreateReceiver(BrowserThread::UI, done, result));
   }
 
   void DispatchInstallEventOnIOThread(const base::Closure& done,
                                       ServiceWorkerStatusCode* result) {
     ASSERT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::IO));
     int request_id =
         version_->StartRequest(ServiceWorkerMetrics::EventType::INSTALL,
                                CreateReceiver(BrowserThread::UI, done, result));
-    version_->DispatchSimpleEvent<ServiceWorkerHostMsg_InstallEventFinished>(
-        request_id, ServiceWorkerMsg_InstallEvent(request_id));
+    version_->DispatchInstallEvent(request_id);
   }
 
   void StoreOnIOThread(const base::Closure& done,
                        ServiceWorkerStatusCode* result,
                        int64_t version_id) {
     ASSERT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::IO));
     ServiceWorkerVersion* version =
         wrapper()->context()->GetLiveVersion(version_id);
     wrapper()->context()->storage()->StoreRegistration(
         registration_.get(), version,
@@ skipping 1168 matching lines @@
   NavigateToTestPage();
   // The V8 code cache must be stored to the CacheStorage which must be bigger
   // than 12 byte.
   EXPECT_GT(GetSideDataSize(), kV8CacheTimeStampDataSize);
 
   NavigateToTestPage();
   EXPECT_GT(GetSideDataSize(), kV8CacheTimeStampDataSize);
 }
 
 }  // namespace content