Enable ServiceWorkerNavigationPreload by default

content/browser/service_worker/service_worker_fetch_dispatcher.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 "content/browser/service_worker/service_worker_fetch_dispatcher.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
+#include "base/feature_list.h"
 #include "base/memory/ptr_util.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "content/browser/devtools/service_worker_devtools_agent_host.h"
 #include "content/browser/devtools/service_worker_devtools_manager.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/browser/loader/resource_requester_info.h"
 #include "content/browser/loader/url_loader_factory_impl.h"
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_metrics.h"
 #include "content/browser/service_worker/service_worker_version.h"
 #include "content/common/service_worker/service_worker_event_dispatcher.mojom.h"
 #include "content/common/service_worker/service_worker_messages.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/common/service_worker/service_worker_utils.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/browser_side_navigation_policy.h"
+#include "content/public/common/content_features.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_util.h"
 #include "net/log/net_log.h"
 #include "net/log/net_log_capture_mode.h"
 #include "net/log/net_log_event_type.h"
 #include "net/url_request/url_request.h"
 
 namespace content {
 
@@ skipping 480 matching lines @@
   if (resource_type_ != RESOURCE_TYPE_MAIN_FRAME &&
       resource_type_ != RESOURCE_TYPE_SUB_FRAME) {
     return false;
   }
   if (!version_->navigation_preload_state().enabled)
     return false;
   // TODO(horo): Currently NavigationPreload doesn't support request body.
   if (!request_->blob_uuid.empty())
     return false;
 
-  ServiceWorkerVersion::NavigationPreloadSupportStatus support_status =
-      version_->GetNavigationPreloadSupportStatus();
-  if (support_status !=
-      ServiceWorkerVersion::NavigationPreloadSupportStatus::SUPPORTED) {
+  if (!base::FeatureList::IsEnabled(features::kServiceWorkerNavigationPreload))
     return false;
-  }
 
   ResourceRequestInfoImpl* original_info =
       ResourceRequestInfoImpl::ForRequest(original_request);
   ResourceRequesterInfo* requester_info = original_info->requester_info();
   if (IsBrowserSideNavigationEnabled()) {
     DCHECK(requester_info->IsBrowserSideNavigation());
   } else {
     DCHECK(requester_info->IsRenderer());
     if (!requester_info->filter())
       return false;
@@ skipping 78 matching lines @@
     ServiceWorkerVersion* version,
     int event_finish_id,
     scoped_refptr<URLLoaderAssets> url_loader_assets,
     ServiceWorkerStatusCode status,
     base::Time dispatch_event_time) {
   version->FinishRequest(event_finish_id, status != SERVICE_WORKER_ERROR_ABORT,
                          dispatch_event_time);
 }
 
 }  // namespace content