Refine error code returned by ServiceWorkerVersion::StartWorker (e.g. PROCESS_NOT_FOUND etc)

content/browser/service_worker/embedded_worker_instance.h

 // 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "content/common/content_export.h"
+#include "content/common/service_worker/service_worker_status_code.h"
 
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 
 class EmbeddedWorkerRegistry;
@@ skipping 16 matching lines @@
     virtual ~Observer() {}
     virtual void OnStarted() = 0;
     virtual void OnStopped() = 0;
     virtual void OnMessageReceived(const IPC::Message& message) = 0;
   };
 
   ~EmbeddedWorkerInstance();
 
   // Starts the worker. It is invalid to call this when the worker is
   // not in STOPPED status.
-  // This returns false if starting a worker fails immediately, e.g. when
-  // IPC couldn't be sent to the worker or no process was available.
-  bool Start(int64 service_worker_version_id,
-             const GURL& script_url);
+  ServiceWorkerStatusCode Start(int64 service_worker_version_id,
+                                const GURL& script_url);
 
   // Stops the worker. It is invalid to call this when the worker is
   // not in STARTING or RUNNING status.
   // This returns false if stopping a worker fails immediately, e.g. when
   // IPC couldn't be sent to the worker.
-  bool Stop();
+  ServiceWorkerStatusCode Stop();
 
   // Sends |message| to the embedded worker running in the child process.
-  // This returns false if sending IPC fails.
   // It is invalid to call this while the worker is not in RUNNING status.
-  bool SendMessage(const IPC::Message& message);
+  ServiceWorkerStatusCode SendMessage(const IPC::Message& message);
 
   // Add or remove |process_id| to the internal process set where this
   // worker can be started.
   void AddProcessReference(int process_id);
   void ReleaseProcessReference(int process_id);
 
   int embedded_worker_id() const { return embedded_worker_id_; }
   Status status() const { return status_; }
   int process_id() const { return process_id_; }
   int thread_id() const { return thread_id_; }
@@ skipping 42 matching lines @@
 
   ProcessRefMap process_refs_;
   ObserverList<Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerInstance);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_