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

content/browser/service_worker/embedded_worker_registry.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_REGISTRY_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
+#include "content/common/service_worker/service_worker_status_code.h"
 
 class GURL;
 
 namespace IPC {
 class Message;
 class Sender;
 }
 
 namespace content {
 
 class EmbeddedWorkerInstance;
 class ServiceWorkerContextCore;
 
 // Acts as a thin stub between MessageFilter and each EmbeddedWorkerInstance,
 // which sends/receives messages to/from each EmbeddedWorker in child process.
 //
 // Hangs off ServiceWorkerContextCore (its reference is also held by each
 // EmbeddedWorkerInstance).  Operated only on IO thread.
 class CONTENT_EXPORT EmbeddedWorkerRegistry
     : public NON_EXPORTED_BASE(base::RefCounted<EmbeddedWorkerRegistry>) {
  public:
   explicit EmbeddedWorkerRegistry(
       base::WeakPtr<ServiceWorkerContextCore> context);
 
   // Creates and removes a new worker instance entry for bookkeeping.
   // This doesn't actually start or stop the worker.
   scoped_ptr<EmbeddedWorkerInstance> CreateWorker();
 
   // Called from EmbeddedWorkerInstance, relayed to the child process.
-  bool StartWorker(int process_id,
-                   int embedded_worker_id,
-                   int64 service_worker_version_id,
-                   const GURL& script_url);
-  bool StopWorker(int process_id,
-                  int embedded_worker_id);
+  ServiceWorkerStatusCode StartWorker(int process_id,
+                                      int embedded_worker_id,
+                                      int64 service_worker_version_id,
+                                      const GURL& script_url);
+  ServiceWorkerStatusCode StopWorker(int process_id,
+                                     int embedded_worker_id);
 
   // Called back from EmbeddedWorker in the child process, relayed via
   // ServiceWorkerDispatcherHost.
   void OnWorkerStarted(int process_id, int thread_id, int embedded_worker_id);
   void OnWorkerStopped(int process_id, int embedded_worker_id);
   void OnSendMessageToBrowser(int embedded_worker_id,
                               const IPC::Message& message);
 
   // Keeps a map from process_id to sender information.
   void AddChildProcessSender(int process_id, IPC::Sender* sender);
   void RemoveChildProcessSender(int process_id);
 
   // Returns an embedded worker instance for given |embedded_worker_id|.
   EmbeddedWorkerInstance* GetWorker(int embedded_worker_id);
 
  private:
   friend class base::RefCounted<EmbeddedWorkerRegistry>;
   friend class EmbeddedWorkerInstance;
 
   typedef std::map<int, EmbeddedWorkerInstance*> WorkerInstanceMap;
   typedef std::map<int, IPC::Sender*> ProcessToSenderMap;
 
   ~EmbeddedWorkerRegistry();
-  bool Send(int process_id, IPC::Message* message);
+  ServiceWorkerStatusCode Send(int process_id, IPC::Message* message);
 
   // RemoveWorker is called when EmbeddedWorkerInstance is destructed.
   // |process_id| could be invalid (i.e. -1) if it's not running.
   void RemoveWorker(int process_id, int embedded_worker_id);
 
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   WorkerInstanceMap worker_map_;
   ProcessToSenderMap process_sender_map_;
 
   // Map from process_id to embedded_worker_id.
   // This map only contains running workers.
   std::map<int, int> worker_process_map_;
 
   int next_embedded_worker_id_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerRegistry);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_