Revert of ServiceWorker: Change DCHECK to CHECK for debugging process allocation

content/browser/service_worker/embedded_worker_instance.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/embedded_worker_instance.h"
 
 #include <utility>
 
 #include "base/bind_helpers.h"
 #include "base/macros.h"
@@ skipping 559 matching lines @@
       status_(EmbeddedWorkerStatus::STOPPED),
       starting_phase_(NOT_STARTING),
       thread_id_(kInvalidEmbeddedWorkerThreadId),
       devtools_attached_(false),
       network_accessed_for_script_(false),
       weak_factory_(this) {}
 
 void EmbeddedWorkerInstance::OnProcessAllocated(
     std::unique_ptr<WorkerProcessHandle> handle,
     ServiceWorkerMetrics::StartSituation start_situation) {
-  // TODO(shimazu): Change CHECK to DCHECK after crbug.com/668633 is fixed.
-  CHECK_EQ(EmbeddedWorkerStatus::STARTING, status_);
-  CHECK(!process_handle_);
+  DCHECK_EQ(EmbeddedWorkerStatus::STARTING, status_);
+  DCHECK(!process_handle_);
 
   process_handle_ = std::move(handle);
   starting_phase_ = REGISTERING_TO_DEVTOOLS;
   start_situation_ = start_situation;
   for (auto& observer : listener_list_)
     observer.OnProcessAllocated();
 }
 
 void EmbeddedWorkerInstance::OnRegisteredToDevToolsManager(
     bool is_new_process,
@@ skipping 350 matching lines @@
     case SCRIPT_READ_FINISHED:
       return "Script read finished";
     case STARTING_PHASE_MAX_VALUE:
       NOTREACHED();
   }
   NOTREACHED() << phase;
   return std::string();
 }
 
 }  // namespace content