ServiceWorker: Change DCHECK to CHECK for debugging

content/browser/service_worker/service_worker_context_core.cc

Index: content/browser/service_worker/service_worker_context_core.cc
diff --git a/content/browser/service_worker/service_worker_context_core.cc b/content/browser/service_worker/service_worker_context_core.cc
index cd1abb63b7a6a3a410fc38fc54df8f1eeb731ef6..d787d5c1d9e71227ef5df1d4b66fd1540badb902 100644
--- a/content/browser/service_worker/service_worker_context_core.cc
+++ b/content/browser/service_worker/service_worker_context_core.cc
@@ -509,7 +509,9 @@ ServiceWorkerRegistration* ServiceWorkerContextCore::GetLiveRegistration(
 
 void ServiceWorkerContextCore::AddLiveRegistration(
     ServiceWorkerRegistration* registration) {
-  DCHECK(!GetLiveRegistration(registration->id()));
+  // TODO(nhiroki): Change CHECK to DCHECK after https://crbug.com/619294 is
+  // fixed.
+  CHECK(!GetLiveRegistration(registration->id()));
   live_registrations_[registration->id()] = registration;
   if (observer_list_.get()) {
     observer_list_->Notify(FROM_HERE,