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

content/browser/service_worker/service_worker_read_from_cache_job_unittest.cc

 // Copyright 2015 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_read_from_cache_job.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 79 matching lines @@
     // Populate a registration in the storage.
     registration_ =
         new ServiceWorkerRegistration(GURL("http://example.com/scope"),
                                       kRegistrationId, context()->AsWeakPtr());
     version_ = new ServiceWorkerVersion(registration_.get(), main_script_.url,
                                         kVersionId, context()->AsWeakPtr());
     std::vector<ServiceWorkerDatabase::ResourceRecord> resources;
     resources.push_back(main_script_);
     resources.push_back(imported_script_);
     version_->script_cache_map()->SetResources(resources);
+    version_->set_fetch_handler_existence(
+        ServiceWorkerVersion::FetchHandlerExistence::EXISTS);
     ASSERT_EQ(SERVICE_WORKER_OK, StoreRegistration());
     ASSERT_TRUE(WriteResource(main_script_.resource_id));
     ASSERT_TRUE(WriteResource(imported_script_.resource_id));
   }
 
   bool WriteResource(int64_t resource_id) {
     const char kHttpHeaders[] = "HTTP/1.0 200 OK\0Content-Length: 5\0\0";
     const char kHttpBody[] = "Hello";
     const int length = arraysize(kHttpBody);
     std::string headers(kHttpHeaders, arraysize(kHttpHeaders));
@@ skipping 131 matching lines @@
   EXPECT_EQ(net::ERR_CACHE_MISS, request->status().error());
   EXPECT_EQ(SERVICE_WORKER_ERROR_DISK_CACHE,
             DeduceStartWorkerFailureReason(SERVICE_WORKER_OK));
 
   // The version should be doomed by the job.
   EXPECT_EQ(ServiceWorkerVersion::REDUNDANT, version_->status());
   EXPECT_EQ(SERVICE_WORKER_ERROR_NOT_FOUND, FindRegistration());
 }
 
 }  // namespace content