service worker: Add CHECKs for investigating null http info bug.

content/browser/service_worker/service_worker_handle_unittest.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 <tuple>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "content/browser/service_worker/embedded_worker_registry.h"
@@ skipping 76 matching lines @@
         helper_->context()->AsWeakPtr());
     version_ = new ServiceWorkerVersion(
         registration_.get(),
         GURL("http://www.example.com/service_worker.js"),
         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_->SetMainScriptHttpResponseInfo(net::HttpResponseInfo());
     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();
     ServiceWorkerStatusCode status = SERVICE_WORKER_ERROR_FAILED;
     helper_->context()->storage()->StoreRegistration(
         registration_.get(),
@@ skipping 70 matching lines @@
   // StateChanged (state == Installed).
   VerifyStateChangedMessage(handle->handle_id(),
                             blink::WebServiceWorkerStateInstalled, message);
 }
 
 INSTANTIATE_TEST_CASE_P(ServiceWorkerHandleTest,
                         ServiceWorkerHandleTestP,
                         ::testing::Values(false, true));
 
 }  // namespace content