Use tri-state enum for the existence of Fetch Handler in ServiceWorkerVersion.

content/browser/service_worker/service_worker_dispatcher_host_unittest.cc

 // Copyright 2013 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 "content/browser/service_worker/service_worker_dispatcher_host.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 111 matching lines @@
 
   void SetUpRegistration(const GURL& scope, const GURL& script_url) {
     registration_ = new ServiceWorkerRegistration(
         scope, 1L, helper_->context()->AsWeakPtr());
     version_ = new ServiceWorkerVersion(registration_.get(), script_url, 1L,
                                         helper_->context()->AsWeakPtr());
     std::vector<ServiceWorkerDatabase::ResourceRecord> records;
     records.push_back(
         ServiceWorkerDatabase::ResourceRecord(10, version_->script_url(), 100));
     version_->script_cache_map()->SetResources(records);
+    version_->set_fetch_handler_existence(
+        ServiceWorkerVersion::FetchHandlerExistence::EXISTS);
+    version_->SetStatus(ServiceWorkerVersion::INSTALLING);
 
     // Make the registration findable via storage functions.
     helper_->context()->storage()->LazyInitialize(base::Bind(&base::DoNothing));
     base::RunLoop().RunUntilIdle();
     bool called = false;
     ServiceWorkerStatusCode status = SERVICE_WORKER_ERROR_MAX_VALUE;
     helper_->context()->storage()->StoreRegistration(
         registration_.get(), version_.get(),
         base::Bind(&SaveStatusCallback, &called, &status));
     base::RunLoop().RunUntilIdle();
@@ skipping 681 matching lines @@
   const int kRequestId = 91;  // Dummy value
   dispatcher_host_->OnMessageReceived(ServiceWorkerHostMsg_FetchEventResponse(
       version_->embedded_worker()->embedded_worker_id(), kRequestId,
       SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK, ServiceWorkerResponse()));
 
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(0, dispatcher_host_->bad_messages_received_count_);
 }
 
 }  // namespace content