Show the fetch handler existence in chrome://serviceworker-internals

content/browser/service_worker/service_worker_internals_ui.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_internals_ui.h"
 
 #include <stdint.h>
 
 #include <string>
 #include <utility>
@@ skipping 131 matching lines @@
     case ServiceWorkerVersion::ACTIVATING:
       info->SetString("status", "ACTIVATING");
       break;
     case ServiceWorkerVersion::ACTIVATED:
       info->SetString("status", "ACTIVATED");
       break;
     case ServiceWorkerVersion::REDUNDANT:
       info->SetString("status", "REDUNDANT");
       break;
   }
+
+  switch (version.fetch_handler_existence) {
+    case ServiceWorkerVersion::FetchHandlerExistence::UNKNOWN:
+      info->SetString("fetch_handler_existence", "UNKNOWN");
+      break;
+    case ServiceWorkerVersion::FetchHandlerExistence::EXISTS:
+      info->SetString("fetch_handler_existence", "EXISTS");
+      break;
+    case ServiceWorkerVersion::FetchHandlerExistence::DOES_NOT_EXIST:
+      info->SetString("fetch_handler_existence", "DOES_NOT_EXIST");
+      break;
+  }
+
   info->SetString("script_url", version.script_url.spec());
   info->SetString("version_id", base::Int64ToString(version.version_id));
   info->SetInteger("process_id",
                    static_cast<int>(GetRealProcessId(version.process_id)));
   info->SetInteger("process_host_id", version.process_id);
   info->SetInteger("thread_id", version.thread_id);
   info->SetInteger("devtools_agent_route_id", version.devtools_agent_route_id);
 }
 
 ListValue* GetRegistrationListValue(
@@ skipping 427 matching lines @@
     callback.Run(SERVICE_WORKER_ERROR_ABORT);
     return;
   }
 
   // ServiceWorkerContextWrapper::UnregisterServiceWorker doesn't work here
   // because that reduces a status code to boolean.
   context->context()->UnregisterServiceWorker(scope, callback);
 }
 
 }  // namespace content