TabManager checks if ServiceWorker exists on the suspending process

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 <memory>
 #include <set>
@@ skipping 74 matching lines @@
                          int line_number,
                          int column_number,
                          const GURL& source_url);
   void OnReportConsoleMessage(int embedded_worker_id,
                               int source_identifier,
                               int message_level,
                               const base::string16& message,
                               int line_number,
                               const GURL& source_url);
 
+  // Checks if service workers exist on the process.
+  bool IsWorkerExists(int process_id);
+
   // Keeps a map from process_id to sender information.
   void AddChildProcessSender(
       int process_id,
       IPC::Sender* sender,
       MessagePortMessageFilter* message_port_message_filter);
   void RemoveChildProcessSender(int process_id);
 
   // Returns an embedded worker instance for given |embedded_worker_id|.
   EmbeddedWorkerInstance* GetWorker(int embedded_worker_id);
 
@@ skipping 51 matching lines @@
 
   int next_embedded_worker_id_;
   const int initial_embedded_worker_id_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerRegistry);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_