build: add enable_remote_module build flag (#19821)

shell/common/api/remote/remote_callback_freer.h

@@ -0,0 +1,46 @@
+// 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 SHELL_COMMON_API_REMOTE_REMOTE_CALLBACK_FREER_H_
+#define SHELL_COMMON_API_REMOTE_REMOTE_CALLBACK_FREER_H_
+
+#include <string>
+
+#include "content/public/browser/web_contents_observer.h"
+#include "shell/common/api/remote/object_life_monitor.h"
+
+namespace electron {
+
+class RemoteCallbackFreer : public ObjectLifeMonitor,
+                            public content::WebContentsObserver {
+ public:
+  static void BindTo(v8::Isolate* isolate,
+                     v8::Local<v8::Object> target,
+                     const std::string& context_id,
+                     int object_id,
+                     content::WebContents* web_conents);
+
+ protected:
+  RemoteCallbackFreer(v8::Isolate* isolate,
+                      v8::Local<v8::Object> target,
+                      const std::string& context_id,
+                      int object_id,
+                      content::WebContents* web_conents);
+  ~RemoteCallbackFreer() override;
+
+  void RunDestructor() override;
+
+  // content::WebContentsObserver:
+  void RenderViewDeleted(content::RenderViewHost*) override;
+
+ private:
+  std::string context_id_;
+  int object_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(RemoteCallbackFreer);
+};
+
+}  // namespace electron
+
+#endif  // SHELL_COMMON_API_REMOTE_REMOTE_CALLBACK_FREER_H_