TabManager checks if ServiceWorker exists on the suspending process

content/public/browser/service_worker_context.h

Index: content/public/browser/service_worker_context.h
diff --git a/content/public/browser/service_worker_context.h b/content/public/browser/service_worker_context.h
index c095f9d1314c7fe028441bb19479c2f73d4fc99e..15dfc59a440808dc849c505dcd9285fdf5903144 100644
--- a/content/public/browser/service_worker_context.h
+++ b/content/public/browser/service_worker_context.h
@@ -145,6 +145,12 @@ class ServiceWorkerContext {
       int render_process_id,
       const ResultCallback& callback) = 0;
 
+  // Check if any service worker exists on the process specified by
+  // |render_process_id|. Must be called from the IO thread. Returns true if
+  // one or more service workers exist on the process and false if no worker
+  // resides.
+  virtual bool IsServiceWorkerExistsOnProcess(int render_process_id) = 0;
+
  protected:
   ServiceWorkerContext() {}
   virtual ~ServiceWorkerContext() {}