Revert of service worker: use 200 OK for update requests even in the no update case

content/browser/service_worker/service_worker_version.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_version.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <string>
@@ skipping 1332 matching lines @@
   }
 }
 
 void ServiceWorkerVersion::StartWorkerInternal() {
   if (!metrics_)
     metrics_.reset(new Metrics(this));
 
   if (!timeout_timer_.IsRunning())
     StartTimeoutTimer();
   if (running_status() == STOPPED) {
-    DCHECK(!pause_after_download_ || !IsInstalled(status()));
     embedded_worker_->Start(
         version_id_, scope_, script_url_,
         base::Bind(&ServiceWorkerVersion::OnStartSentAndScriptEvaluated,
-                   weak_factory_.GetWeakPtr()),
-        pause_after_download_);
+                   weak_factory_.GetWeakPtr()));
   }
 }
 
 void ServiceWorkerVersion::StartTimeoutTimer() {
   DCHECK(!timeout_timer_.IsRunning());
 
   if (embedded_worker_->devtools_attached()) {
     // Don't record the startup time metric once DevTools is attached.
     ClearTick(&start_time_);
     skip_recording_startup_time_ = true;
@@ skipping 385 matching lines @@
 void ServiceWorkerVersion::OnBeginEvent() {
   if (should_exclude_from_uma_ || running_status() != RUNNING ||
       idle_time_.is_null()) {
     return;
   }
   ServiceWorkerMetrics::RecordTimeBetweenEvents(base::TimeTicks::Now() -
                                                 idle_time_);
 }
 
 }  // namespace content