Add CHECKs to investigate ServiceWorkerControlleeRequestHandler crash.

content/browser/service_worker/service_worker_registration.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_registration.h"
 
 #include <vector>
 
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
@@ skipping 339 matching lines @@
     const scoped_refptr<ServiceWorkerVersion>& version) {
   DCHECK_EQ(id(), version->registration_id());
 
   UnsetVersion(version.get());
 
   for (std::unique_ptr<ServiceWorkerContextCore::ProviderHostIterator> it =
            context_->GetProviderHostIterator();
        !it->IsAtEnd(); it->Advance()) {
     ServiceWorkerProviderHost* host = it->GetProviderHost();
     if (host->controlling_version() == version)
-      host->NotifyControllerLost();
+      host->NotifyControllerLost(true /* was_deleted */);
   }
 
   version->Doom();
 
   if (!active_version() && !waiting_version()) {
     // Delete the records from the db.
     context_->storage()->DeleteRegistration(
         id(), pattern().GetOrigin(),
         base::Bind(&ServiceWorkerRegistration::OnDeleteFinished, this));
     // But not from memory if there is a version in the pipeline.
@@ skipping 142 matching lines @@
   if (!context_) {
     callback.Run(SERVICE_WORKER_ERROR_ABORT);
     return;
   }
   context_->storage()->NotifyDoneInstallingRegistration(
       this, version.get(), status);
   callback.Run(status);
 }
 
 }  // namespace content