feat: service worker preload scripts for improved extensions support (#44411)

* feat: preload scripts for service workers

* feat: service worker IPC

* test: service worker preload scripts and ipc

shell/renderer/preload_utils.h

@@ -0,0 +1,27 @@
+// Copyright (c) 2016 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ELECTRON_SHELL_RENDERER_PRELOAD_UTILS_H_
+#define ELECTRON_SHELL_RENDERER_PRELOAD_UTILS_H_
+
+#include "v8/include/v8-forward.h"
+
+namespace gin_helper {
+class Arguments;
+}
+
+namespace electron::preload_utils {
+
+v8::Local<v8::Value> GetBinding(v8::Isolate* isolate,
+                                v8::Local<v8::String> key,
+                                gin_helper::Arguments* margs);
+
+v8::Local<v8::Value> CreatePreloadScript(v8::Isolate* isolate,
+                                         v8::Local<v8::String> source);
+
+double Uptime();
+
+}  // namespace electron::preload_utils
+
+#endif  // ELECTRON_SHELL_RENDERER_PRELOAD_UTILS_H_