diff --git a/atom/browser/api/atom_api_app.cc b/atom/browser/api/atom_api_app.cc
index 3851fcfccbcb..5228c640f003 100644
--- a/atom/browser/api/atom_api_app.cc
+++ b/atom/browser/api/atom_api_app.cc
@@ -639,6 +639,7 @@ void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
   auto command_line = base::CommandLine::ForCurrentProcess();
 
   mate::Dictionary dict(isolate, exports);
+  dict.Set("App", atom::api::App::GetConstructor(isolate)->GetFunction());
   dict.Set("app", atom::api::App::Create(isolate));
   dict.SetMethod("appendSwitch", &AppendSwitch);
   dict.SetMethod("appendArgument",
diff --git a/atom/browser/api/atom_api_auto_updater.cc b/atom/browser/api/atom_api_auto_updater.cc
index 0908911bd520..83e5505a1953 100644
--- a/atom/browser/api/atom_api_auto_updater.cc
+++ b/atom/browser/api/atom_api_auto_updater.cc
@@ -122,11 +122,14 @@ void AutoUpdater::BuildPrototype(
 
 namespace {
 
+using atom::api::AutoUpdater;
+
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
   mate::Dictionary dict(isolate, exports);
-  dict.Set("autoUpdater", atom::api::AutoUpdater::Create(isolate));
+  dict.Set("autoUpdater", AutoUpdater::Create(isolate));
+  dict.Set("AutoUpdater", AutoUpdater::GetConstructor(isolate)->GetFunction());
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_debugger.cc b/atom/browser/api/atom_api_debugger.cc
index dea70b23e5cd..88d2a7adf4a7 100644
--- a/atom/browser/api/atom_api_debugger.cc
+++ b/atom/browser/api/atom_api_debugger.cc
@@ -23,14 +23,6 @@ namespace atom {
 
 namespace api {
 
-namespace {
-
-// The wrapDebugger funtion which is implemented in JavaScript.
-using WrapDebuggerCallback = base::Callback<void(v8::Local<v8::Value>)>;
-WrapDebuggerCallback g_wrap_debugger;
-
-}  // namespace
-
 Debugger::Debugger(v8::Isolate* isolate, content::WebContents* web_contents)
     : web_contents_(web_contents),
       previous_request_id_(0) {
@@ -151,10 +143,7 @@ void Debugger::SendCommand(mate::Arguments* args) {
 mate::Handle<Debugger> Debugger::Create(
     v8::Isolate* isolate,
     content::WebContents* web_contents) {
-  auto handle = mate::CreateHandle(
-      isolate, new Debugger(isolate, web_contents));
-  g_wrap_debugger.Run(handle.ToV8());
-  return handle;
+  return mate::CreateHandle(isolate, new Debugger(isolate, web_contents));
 }
 
 // static
@@ -168,21 +157,19 @@ void Debugger::BuildPrototype(v8::Isolate* isolate,
       .SetMethod("sendCommand", &Debugger::SendCommand);
 }
 
-void SetWrapDebugger(const WrapDebuggerCallback& callback) {
-  g_wrap_debugger = callback;
-}
-
 }  // namespace api
 
 }  // namespace atom
 
 namespace {
 
+using atom::api::Debugger;
+
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
-  mate::Dictionary dict(isolate, exports);
-  dict.SetMethod("_setWrapDebugger", &atom::api::SetWrapDebugger);
+  mate::Dictionary(isolate, exports)
+      .Set("Debugger", Debugger::GetConstructor(isolate)->GetFunction());
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_download_item.cc b/atom/browser/api/atom_api_download_item.cc
index 5c7ea07e2b0f..05261a64f087 100644
--- a/atom/browser/api/atom_api_download_item.cc
+++ b/atom/browser/api/atom_api_download_item.cc
@@ -51,10 +51,6 @@ namespace api {
 
 namespace {
 
-// The wrapDownloadItem funtion which is implemented in JavaScript
-using WrapDownloadItemCallback = base::Callback<void(v8::Local<v8::Value>)>;
-WrapDownloadItemCallback g_wrap_download_item;
-
 std::map<uint32_t, v8::Global<v8::Object>> g_download_item_objects;
 
 }  // namespace
@@ -197,7 +193,6 @@ mate::Handle<DownloadItem> DownloadItem::Create(
     return mate::CreateHandle(isolate, static_cast<DownloadItem*>(existing));
 
   auto handle = mate::CreateHandle(isolate, new DownloadItem(isolate, item));
-  g_wrap_download_item.Run(handle.ToV8());
 
   // Reference this object in case it got garbage collected.
   g_download_item_objects[handle->weak_map_id()] =
@@ -205,10 +200,6 @@ mate::Handle<DownloadItem> DownloadItem::Create(
   return handle;
 }
 
-void SetWrapDownloadItem(const WrapDownloadItemCallback& callback) {
-  g_wrap_download_item = callback;
-}
-
 }  // namespace api
 
 }  // namespace atom
@@ -218,8 +209,9 @@ namespace {
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
-  mate::Dictionary dict(isolate, exports);
-  dict.SetMethod("_setWrapDownloadItem", &atom::api::SetWrapDownloadItem);
+  mate::Dictionary(isolate, exports)
+      .Set("DownloadItem",
+           atom::api::DownloadItem::GetConstructor(isolate)->GetFunction());
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_power_monitor.cc b/atom/browser/api/atom_api_power_monitor.cc
index 51d078bb948c..02b61e8f4bb1 100644
--- a/atom/browser/api/atom_api_power_monitor.cc
+++ b/atom/browser/api/atom_api_power_monitor.cc
@@ -63,16 +63,19 @@ void PowerMonitor::BuildPrototype(
 
 namespace {
 
+using atom::api::PowerMonitor;
+
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
 #if defined(OS_MACOSX)
   base::PowerMonitorDeviceSource::AllocateSystemIOPorts();
 #endif
 
-  using atom::api::PowerMonitor;
   v8::Isolate* isolate = context->GetIsolate();
   mate::Dictionary dict(isolate, exports);
   dict.Set("powerMonitor", PowerMonitor::Create(isolate));
+  dict.Set("PowerMonitor",
+           PowerMonitor::GetConstructor(isolate)->GetFunction());
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_screen.cc b/atom/browser/api/atom_api_screen.cc
index eabfc18d8870..dfdd3450ebd8 100644
--- a/atom/browser/api/atom_api_screen.cc
+++ b/atom/browser/api/atom_api_screen.cc
@@ -129,10 +129,14 @@ void Screen::BuildPrototype(
 
 namespace {
 
+using atom::api::Screen;
+
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
-  mate::Dictionary dict(context->GetIsolate(), exports);
-  dict.Set("screen", atom::api::Screen::Create(context->GetIsolate()));
+  v8::Isolate* isolate = context->GetIsolate();
+  mate::Dictionary dict(isolate, exports);
+  dict.Set("screen", Screen::Create(isolate));
+  dict.Set("Screen", Screen::GetConstructor(isolate)->GetFunction());
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_session.cc b/atom/browser/api/atom_api_session.cc
index 25eca3b7e5da..58de02f2ff63 100644
--- a/atom/browser/api/atom_api_session.cc
+++ b/atom/browser/api/atom_api_session.cc
@@ -170,10 +170,6 @@ namespace {
 
 const char kPersistPrefix[] = "persist:";
 
-// The wrapSession funtion which is implemented in JavaScript
-using WrapSessionCallback = base::Callback<void(v8::Local<v8::Value>)>;
-WrapSessionCallback g_wrap_session;
-
 // Referenced session objects.
 std::map<uint32_t, v8::Global<v8::Object>> g_sessions;
 
@@ -541,7 +537,6 @@ mate::Handle<Session> Session::CreateFrom(
 
   auto handle = mate::CreateHandle(
       isolate, new Session(isolate, browser_context));
-  g_wrap_session.Run(handle.ToV8());
 
   // The Sessions should never be garbage collected, since the common pattern is
   // to use partition strings, instead of using the Session object directly.
@@ -596,16 +591,14 @@ void Session::BuildPrototype(v8::Isolate* isolate,
       .SetProperty("webRequest", &Session::WebRequest);
 }
 
-void SetWrapSession(const WrapSessionCallback& callback) {
-  g_wrap_session = callback;
-}
-
 }  // namespace api
 
 }  // namespace atom
 
 namespace {
 
+using atom::api::Session;
+
 v8::Local<v8::Value> FromPartition(
     const std::string& partition, mate::Arguments* args) {
   if (!atom::Browser::Get()->is_ready()) {
@@ -614,16 +607,15 @@ v8::Local<v8::Value> FromPartition(
   }
   base::DictionaryValue options;
   args->GetNext(&options);
-  return atom::api::Session::FromPartition(
-      args->isolate(), partition, options).ToV8();
+  return Session::FromPartition(args->isolate(), partition, options).ToV8();
 }
 
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
   mate::Dictionary dict(isolate, exports);
+  dict.Set("Session", Session::GetConstructor(isolate)->GetFunction());
   dict.SetMethod("fromPartition", &FromPartition);
-  dict.SetMethod("_setWrapSession", &atom::api::SetWrapSession);
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_system_preferences.cc b/atom/browser/api/atom_api_system_preferences.cc
index df66234b9b0f..618a9dff5b2e 100644
--- a/atom/browser/api/atom_api_system_preferences.cc
+++ b/atom/browser/api/atom_api_system_preferences.cc
@@ -69,11 +69,15 @@ void SystemPreferences::BuildPrototype(
 
 namespace {
 
+using atom::api::SystemPreferences;
+
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
   mate::Dictionary dict(isolate, exports);
-  dict.Set("systemPreferences", atom::api::SystemPreferences::Create(isolate));
+  dict.Set("systemPreferences", SystemPreferences::Create(isolate));
+  dict.Set("SystemPreferences",
+           SystemPreferences::GetConstructor(isolate)->GetFunction());
 }
 
 }  // namespace
diff --git a/atom/browser/api/atom_api_web_contents.cc b/atom/browser/api/atom_api_web_contents.cc
index bb73e04f1354..63638a272968 100644
--- a/atom/browser/api/atom_api_web_contents.cc
+++ b/atom/browser/api/atom_api_web_contents.cc
@@ -221,10 +221,6 @@ namespace api {
 
 namespace {
 
-// The wrapWebContents function which is implemented in JavaScript
-using WrapWebContentsCallback = base::Callback<void(v8::Local<v8::Value>)>;
-WrapWebContentsCallback g_wrap_web_contents;
-
 content::ServiceWorkerContext* GetServiceWorkerContext(
     const content::WebContents* web_contents) {
   auto context = web_contents->GetBrowserContext();
@@ -1470,41 +1466,32 @@ mate::Handle<WebContents> WebContents::CreateFrom(
     return mate::CreateHandle(isolate, static_cast<WebContents*>(existing));
 
   // Otherwise create a new WebContents wrapper object.
-  auto handle = mate::CreateHandle(
-      isolate, new WebContents(isolate, web_contents));
-  g_wrap_web_contents.Run(handle.ToV8());
-  return handle;
+  return mate::CreateHandle(isolate, new WebContents(isolate, web_contents));
 }
 
 // static
 mate::Handle<WebContents> WebContents::Create(
     v8::Isolate* isolate, const mate::Dictionary& options) {
-  auto handle = mate::CreateHandle(isolate, new WebContents(isolate, options));
-  g_wrap_web_contents.Run(handle.ToV8());
-  return handle;
-}
-
-void SetWrapWebContents(const WrapWebContentsCallback& callback) {
-  g_wrap_web_contents = callback;
+  return mate::CreateHandle(isolate, new WebContents(isolate, options));
 }
 
 }  // namespace api
 
 }  // namespace atom
 
-
 namespace {
 
+using atom::api::WebContents;
+
 void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
                 v8::Local<v8::Context> context, void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
   mate::Dictionary dict(isolate, exports);
-  dict.SetMethod("create", &atom::api::WebContents::Create);
-  dict.SetMethod("_setWrapWebContents", &atom::api::SetWrapWebContents);
-  dict.SetMethod("fromId",
-                 &mate::TrackableObject<atom::api::WebContents>::FromWeakMapID);
+  dict.Set("WebContents", WebContents::GetConstructor(isolate)->GetFunction());
+  dict.SetMethod("create", &WebContents::Create);
+  dict.SetMethod("fromId", &mate::TrackableObject<WebContents>::FromWeakMapID);
   dict.SetMethod("getAllWebContents",
-                 &mate::TrackableObject<atom::api::WebContents>::GetAll);
+                 &mate::TrackableObject<WebContents>::GetAll);
 }
 
 }  // namespace
diff --git a/atom/browser/api/event_emitter.cc b/atom/browser/api/event_emitter.cc
index 2e13aa7d22b2..3dbcd0601ef8 100644
--- a/atom/browser/api/event_emitter.cc
+++ b/atom/browser/api/event_emitter.cc
@@ -16,9 +16,6 @@ namespace mate {
 
 namespace {
 
-// The prototype of Node's EventEmitter.
-v8::Persistent<v8::Object> g_event_emitter_prototype;
-
 v8::Persistent<v8::ObjectTemplate> event_template;
 
 void PreventDefault(mate::Arguments* args) {
@@ -80,29 +77,6 @@ v8::Local<v8::Object> CreateEventFromFlags(v8::Isolate* isolate, int flags) {
   return obj.GetHandle();
 }
 
-void InheritFromEventEmitter(v8::Isolate* isolate,
-                             v8::Local<v8::FunctionTemplate> constructor) {
-}
-
-void SetEventEmitterPrototype(v8::Isolate* isolate,
-                              v8::Local<v8::Object> prototype) {
-  g_event_emitter_prototype.Reset(isolate, prototype);
-}
-
 }  // namespace internal
 
 }  // namespace mate
-
-
-namespace {
-
-void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
-                v8::Local<v8::Context> context, void* priv) {
-  mate::Dictionary(context->GetIsolate(), exports)
-      .SetMethod("setEventEmitterPrototype",
-                 &mate::internal::SetEventEmitterPrototype);
-}
-
-}  // namespace
-
-NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_event_emitter, Initialize)
diff --git a/atom/browser/api/event_emitter.h b/atom/browser/api/event_emitter.h
index 12f11d095862..ead3beddaac5 100644
--- a/atom/browser/api/event_emitter.h
+++ b/atom/browser/api/event_emitter.h
@@ -32,9 +32,6 @@ v8::Local<v8::Object> CreateCustomEvent(
     v8::Local<v8::Object> event);
 v8::Local<v8::Object> CreateEventFromFlags(v8::Isolate* isolate, int flags);
 
-void InheritFromEventEmitter(v8::Isolate* isolate,
-                             v8::Local<v8::FunctionTemplate> constructor);
-
 }  // namespace internal
 
 // Provide helperers to emit event in JavaScript.
@@ -90,11 +87,6 @@ class EventEmitter : public Wrappable<T> {
  protected:
   EventEmitter() {}
 
-  static void InheritFromEventEmitter(
-      v8::Isolate* isolate, v8::Local<v8::FunctionTemplate> constructor) {
-    internal::InheritFromEventEmitter(isolate, constructor);
-  }
-
  private:
   // this.emit(name, event, args...);
   template<typename... Args>
diff --git a/lib/browser/api/app.js b/lib/browser/api/app.js
index 2a537a6eb3d8..c6ad57321baa 100644
--- a/lib/browser/api/app.js
+++ b/lib/browser/api/app.js
@@ -1,7 +1,7 @@
 'use strict'
 
 const bindings = process.atomBinding('app')
-const {app} = bindings
+const {app, App} = bindings
 
 // Only one app object permitted.
 module.exports = app
@@ -10,7 +10,7 @@ const electron = require('electron')
 const {deprecate, Menu} = electron
 const {EventEmitter} = require('events')
 
-Object.setPrototypeOf(app.__proto__, EventEmitter.prototype)
+Object.setPrototypeOf(App.prototype, EventEmitter.prototype)
 
 let appPath = null
 
@@ -76,7 +76,5 @@ for (let name of events) {
 }
 
 // Wrappers for native classes.
-process.atomBinding('download_item')._setWrapDownloadItem((downloadItem) => {
-  // downloadItem is an EventEmitter.
-  Object.setPrototypeOf(downloadItem.__proto__, EventEmitter.prototype)
-})
+const {DownloadItem} = process.atomBinding('download_item')
+Object.setPrototypeOf(DownloadItem.prototype, EventEmitter.prototype)
diff --git a/lib/browser/api/auto-updater/auto-updater-native.js b/lib/browser/api/auto-updater/auto-updater-native.js
index 4f34f141e10e..80e2eb1b8493 100644
--- a/lib/browser/api/auto-updater/auto-updater-native.js
+++ b/lib/browser/api/auto-updater/auto-updater-native.js
@@ -1,6 +1,6 @@
 const EventEmitter = require('events').EventEmitter
-const autoUpdater = process.atomBinding('auto_updater').autoUpdater
+const {autoUpdater, AutoUpdater} = process.atomBinding('auto_updater')
 
-Object.setPrototypeOf(autoUpdater.__proto__, EventEmitter.prototype)
+Object.setPrototypeOf(AutoUpdater.prototype, EventEmitter.prototype)
 
 module.exports = autoUpdater
diff --git a/lib/browser/api/power-monitor.js b/lib/browser/api/power-monitor.js
index 3e93df5a1862..aee9b450c84f 100644
--- a/lib/browser/api/power-monitor.js
+++ b/lib/browser/api/power-monitor.js
@@ -1,6 +1,6 @@
 const {EventEmitter} = require('events')
-const {powerMonitor} = process.atomBinding('power_monitor')
+const {powerMonitor, PowerMonitor} = process.atomBinding('power_monitor')
 
-Object.setPrototypeOf(powerMonitor.__proto__, EventEmitter.prototype)
+Object.setPrototypeOf(PowerMonitor.prototype, EventEmitter.prototype)
 
 module.exports = powerMonitor
diff --git a/lib/browser/api/screen.js b/lib/browser/api/screen.js
index 6bba99b55368..83381ab5d797 100644
--- a/lib/browser/api/screen.js
+++ b/lib/browser/api/screen.js
@@ -1,6 +1,6 @@
 const {EventEmitter} = require('events')
-const {screen} = process.atomBinding('screen')
+const {screen, Screen} = process.atomBinding('screen')
 
-Object.setPrototypeOf(screen.__proto__, EventEmitter.prototype)
+Object.setPrototypeOf(Screen.prototype, EventEmitter.prototype)
 
 module.exports = screen
diff --git a/lib/browser/api/session.js b/lib/browser/api/session.js
index 0e463cf709cd..af553e442e1a 100644
--- a/lib/browser/api/session.js
+++ b/lib/browser/api/session.js
@@ -1,6 +1,6 @@
 const {EventEmitter} = require('events')
 const {app} = require('electron')
-const {fromPartition, _setWrapSession} = process.atomBinding('session')
+const {fromPartition, Session} = process.atomBinding('session')
 
 // Public API.
 Object.defineProperties(exports, {
@@ -14,9 +14,8 @@ Object.defineProperties(exports, {
   }
 })
 
-// Wraps native Session class.
-_setWrapSession(function (session) {
-  // Session is an EventEmitter.
-  Object.setPrototypeOf(session.__proto__, EventEmitter.prototype)
-  app.emit('session-created', session)
-})
+Object.setPrototypeOf(Session.prototype, EventEmitter.prototype)
+
+Session.prototype._init = function () {
+  app.emit('session-created', this)
+}
diff --git a/lib/browser/api/system-preferences.js b/lib/browser/api/system-preferences.js
index 74c2734f18c1..7d9d475bc242 100644
--- a/lib/browser/api/system-preferences.js
+++ b/lib/browser/api/system-preferences.js
@@ -1,6 +1,6 @@
 const {EventEmitter} = require('events')
-const {systemPreferences} = process.atomBinding('system_preferences')
+const {systemPreferences, SystemPreferences} = process.atomBinding('system_preferences')
 
-Object.setPrototypeOf(systemPreferences.__proto__, EventEmitter.prototype)
+Object.setPrototypeOf(SystemPreferences.prototype, EventEmitter.prototype)
 
 module.exports = systemPreferences
diff --git a/lib/browser/api/web-contents.js b/lib/browser/api/web-contents.js
index a67cf916bd53..796f2b20f6d9 100644
--- a/lib/browser/api/web-contents.js
+++ b/lib/browser/api/web-contents.js
@@ -7,9 +7,6 @@ const {app, ipcMain, session, Menu, NavigationController} = require('electron')
 // before the webContents module.
 session
 
-const binding = process.atomBinding('web_contents')
-const debuggerBinding = process.atomBinding('debugger')
-
 let nextId = 0
 const getNextId = function () {
   return ++nextId
@@ -81,6 +78,11 @@ const defaultPrintingSetting = {
   shouldPrintSelectionOnly: false
 }
 
+const binding = process.atomBinding('web_contents')
+const {WebContents} = binding
+
+Object.setPrototypeOf(WebContents.prototype, EventEmitter.prototype)
+
 // Following methods are mapped to webFrame.
 const webFrameMethods = [
   'insertText',
@@ -95,13 +97,10 @@ const webFrameMethodsWithResult = [
 ]
 
 // Add JavaScript wrappers for WebContents class.
-const wrapWebContents = function (webContents) {
-  // webContents is an EventEmitter.
-  Object.setPrototypeOf(webContents.__proto__, EventEmitter.prototype)
-
+WebContents.prototype._init = function () {
   // Every remote callback from renderer process would add a listenter to the
   // render-view-deleted event, so ignore the listenters warning.
-  webContents.setMaxListeners(0)
+  this.setMaxListeners(0)
 
   // WebContents::send(channel, args..)
   // WebContents::sendToAll(channel, args..)
@@ -109,17 +108,17 @@ const wrapWebContents = function (webContents) {
     if (channel == null) {
       throw new Error('Missing required channel argument')
     }
-    return webContents._send(allFrames, channel, args)
+    return this._send(allFrames, channel, args)
   }
-  webContents.send = sendWrapper.bind(null, false)
-  webContents.sendToAll = sendWrapper.bind(null, true)
+  this.send = sendWrapper.bind(null, false)
+  this.sendToAll = sendWrapper.bind(null, true)
 
   // The navigation controller.
-  const controller = new NavigationController(webContents)
+  const controller = new NavigationController(this)
   for (const name in NavigationController.prototype) {
     const method = NavigationController.prototype[name]
     if (method instanceof Function) {
-      webContents[name] = function () {
+      this[name] = function () {
         return method.apply(controller, arguments)
       }
     }
@@ -141,13 +140,13 @@ const wrapWebContents = function (webContents) {
 
   // Mapping webFrame methods.
   for (const method of webFrameMethods) {
-    webContents[method] = function (...args) {
+    this[method] = function (...args) {
       this.send('ELECTRON_INTERNAL_RENDERER_WEB_FRAME_METHOD', method, args)
     }
   }
 
   for (const method of webFrameMethodsWithResult) {
-    webContents[method] = function (...args) {
+    this[method] = function (...args) {
       const callback = args[args.length - 1]
       const actualArgs = args.slice(0, args.length - 2)
       syncWebFrameMethods.call(this, getNextId(), method, callback, ...actualArgs)
@@ -156,7 +155,7 @@ const wrapWebContents = function (webContents) {
 
   // Make sure webContents.executeJavaScript would run the code only when the
   // webContents has been loaded.
-  webContents.executeJavaScript = function (code, hasUserGesture, callback) {
+  this.executeJavaScript = function (code, hasUserGesture, callback) {
     const requestId = getNextId()
     if (typeof hasUserGesture === 'function') {
       callback = hasUserGesture
@@ -172,10 +171,10 @@ const wrapWebContents = function (webContents) {
   }
 
   // Dispatch IPC messages to the ipc module.
-  webContents.on('ipc-message', function (event, [channel, ...args]) {
+  this.on('ipc-message', function (event, [channel, ...args]) {
     ipcMain.emit(channel, event, ...args)
   })
-  webContents.on('ipc-message-sync', function (event, [channel, ...args]) {
+  this.on('ipc-message-sync', function (event, [channel, ...args]) {
     Object.defineProperty(event, 'returnValue', {
       set: function (value) {
         return event.sendReply(JSON.stringify(value))
@@ -186,24 +185,24 @@ const wrapWebContents = function (webContents) {
   })
 
   // Handle context menu action request from pepper plugin.
-  webContents.on('pepper-context-menu', function (event, params) {
+  this.on('pepper-context-menu', function (event, params) {
     const menu = Menu.buildFromTemplate(params.menu)
     menu.popup(params.x, params.y)
   })
 
   // The devtools requests the webContents to reload.
-  webContents.on('devtools-reload-page', function () {
-    webContents.reload()
+  this.on('devtools-reload-page', function () {
+    this.reload()
   })
 
   // Delays the page-title-updated event to next tick.
-  webContents.on('-page-title-updated', function (...args) {
+  this.on('-page-title-updated', function (...args) {
     setImmediate(() => {
       this.emit.apply(this, ['page-title-updated'].concat(args))
     })
   })
 
-  webContents.printToPDF = function (options, callback) {
+  this.printToPDF = function (options, callback) {
     const printingSetting = Object.assign({}, defaultPrintingSetting)
     if (options.landscape) {
       printingSetting.landscape = options.landscape
@@ -244,19 +243,14 @@ const wrapWebContents = function (webContents) {
     this._printToPDF(printingSetting, callback)
   }
 
-  app.emit('web-contents-created', {}, webContents)
+  app.emit('web-contents-created', {}, this)
 }
 
-binding._setWrapWebContents(wrapWebContents)
+const {Debugger} = process.atomBinding('debugger')
 
-// Add JavaScript wrappers for Debugger class.
-const wrapDebugger = function (webContentsDebugger) {
-  // debugger is an EventEmitter.
-  Object.setPrototypeOf(webContentsDebugger.__proto__, EventEmitter.prototype)
-}
-
-debuggerBinding._setWrapDebugger(wrapDebugger)
+Object.setPrototypeOf(Debugger.prototype, EventEmitter.prototype)
 
+// Public APIs.
 module.exports = {
   create (options = {}) {
     return binding.create(options)
diff --git a/lib/browser/init.js b/lib/browser/init.js
index c0e135bb8088..f7619fd17ba8 100644
--- a/lib/browser/init.js
+++ b/lib/browser/init.js
@@ -6,10 +6,6 @@ const util = require('util')
 const Module = require('module')
 const v8 = require('v8')
 
-// Save the prototype of EventEmitter, must be called before using native API.
-const {setEventEmitterPrototype} = process.binding('atom_browser_event_emitter')
-setEventEmitterPrototype(require('events').EventEmitter)
-
 // We modified the original process.argv to let node.js load the atom.js,
 // we need to restore it here.
 process.argv.splice(1, 1)