TabManager checks if ServiceWorker exists on the suspending process

content/browser/service_worker/service_worker_context_wrapper.cc

Index: content/browser/service_worker/service_worker_context_wrapper.cc
diff --git a/content/browser/service_worker/service_worker_context_wrapper.cc b/content/browser/service_worker/service_worker_context_wrapper.cc
index 6c5881189fa43ed89a803e5713a44b2945f2cf9e..f8d91431a541b42d4ae2fbadf06fca37420fbb9d 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.cc
+++ b/content/browser/service_worker/service_worker_context_wrapper.cc
@@ -22,6 +22,7 @@
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
+#include "content/browser/service_worker/embedded_worker_registry.h"
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_observer.h"
@@ -895,6 +896,13 @@ bool ServiceWorkerContextWrapper::FinishedExternalRequest(
   return version->FinishExternalRequest(request_uuid);
 }
 
+bool ServiceWorkerContextWrapper::IsServiceWorkerExistsOnProcess(
+    int render_process_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  return context()->embedded_worker_registry()->IsWorkerExists(
+      render_process_id);
+}
+
 void ServiceWorkerContextWrapper::DidDeleteAndStartOver(
     ServiceWorkerStatusCode status) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);