Implement updateViaCache flag and no-cache by default for main service worker scripts

content/browser/service_worker/service_worker_context_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/public/browser/service_worker_context.h"
 
 #include <stdint.h>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
@@ skipping 62 matching lines @@
     EXPECT_TRUE(registration->waiting_version());
   } else {
     EXPECT_FALSE(registration->waiting_version());
   }
 
   if (expect_active) {
     EXPECT_TRUE(registration->active_version());
   } else {
     EXPECT_FALSE(registration->active_version());
   }
+
+  EXPECT_EQ(blink::WebServiceWorkerUpdateViaCache::kImports,
+            registration->update_via_cache());
 }
 
 class RejectInstallTestHelper : public EmbeddedWorkerTestHelper {
  public:
   RejectInstallTestHelper() : EmbeddedWorkerTestHelper(base::FilePath()) {}
 
   void OnInstallEvent(
       mojom::ServiceWorkerInstallEventMethodsAssociatedPtrInfo client,
       mojom::ServiceWorkerEventDispatcher::DispatchInstallEventCallback
           callback) override {
@@ skipping 673 matching lines @@
   EXPECT_EQ(REGISTRATION_STORED, notifications_[2].type);
   EXPECT_EQ(pattern, notifications_[2].pattern);
   EXPECT_EQ(registration_id, notifications_[2].registration_id);
 }
 
 INSTANTIATE_TEST_CASE_P(ServiceWorkerContextRecoveryTest,
                         ServiceWorkerContextRecoveryTest,
                         testing::Bool() /* is_storage_on_disk */);
 
 }  // namespace content