Service Worker: Use more specific errors when StartWorker fails

content/browser/service_worker/service_worker_process_manager.h

 // Copyright 2014 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_SERVICE_WORKER_PROCESS_MANAGER_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROCESS_MANAGER_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 24 matching lines @@
   ~ServiceWorkerProcessManager();
 
   // Synchronously prevents new processes from being allocated
   // and drops references to RenderProcessHosts.
   void Shutdown();
 
   // Returns a reference to a running process suitable for starting the Service
   // Worker at |script_url|. Posts |callback| to the IO thread to indicate
   // whether creation succeeded and the process ID that has a new reference.
   //
-  // Allocation can fail with SERVICE_WORKER_ERROR_START_WORKER_FAILED if
+  // Allocation can fail with SERVICE_WORKER_PROCESS_NOT_FOUND if
   // RenderProcessHost::Init fails.
   void AllocateWorkerProcess(
       int embedded_worker_id,
       const GURL& pattern,
       const GURL& script_url,
       const base::Callback<void(ServiceWorkerStatusCode, int process_id)>&
           callback);
 
   // Drops a reference to a process that was running a Service Worker, and its
   // SiteInstance.  This must match a call to AllocateWorkerProcess.
@@ skipping 75 matching lines @@
 
 namespace base {
 // Specialized to post the deletion to the UI thread.
 template <>
 struct CONTENT_EXPORT DefaultDeleter<content::ServiceWorkerProcessManager> {
   void operator()(content::ServiceWorkerProcessManager* ptr) const;
 };
 }  // namespace base
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROCESS_MANAGER_H_