diff --git a/atom/browser/api/atom_api_window.cc b/atom/browser/api/atom_api_window.cc
index 9be2862c190e..f4f4b7f659f4 100644
--- a/atom/browser/api/atom_api_window.cc
+++ b/atom/browser/api/atom_api_window.cc
@@ -82,6 +82,15 @@ void Window::OnPageTitleUpdated(bool* prevent_default,
   *prevent_default = Emit("page-title-updated", args);
 }
 
+void Window::WillCreatePopupWindow(const base::string16& frame_name,
+                                   const GURL& target_url,
+                                   const std::string& partition_id) {
+  base::ListValue args;
+  args.AppendString(target_url.spec());
+  args.AppendString(frame_name);
+  Emit("new-window", args);
+}
+
 void Window::WillCloseWindow(bool* prevent_default) {
   *prevent_default = Emit("close");
 }
diff --git a/atom/browser/api/atom_api_window.h b/atom/browser/api/atom_api_window.h
index 4caccefc414d..f17861359b81 100644
--- a/atom/browser/api/atom_api_window.h
+++ b/atom/browser/api/atom_api_window.h
@@ -45,6 +45,9 @@ class Window : public mate::EventEmitter,
   // Implementations of NativeWindowObserver:
   void OnPageTitleUpdated(bool* prevent_default,
                           const std::string& title) override;
+  void WillCreatePopupWindow(const base::string16& frame_name,
+                             const GURL& target_url,
+                             const std::string& partition_id) override;
   void WillCloseWindow(bool* prevent_default) override;
   void OnWindowClosed() override;
   void OnWindowBlur() override;
diff --git a/atom/browser/api/lib/browser-window.coffee b/atom/browser/api/lib/browser-window.coffee
index 360f069e59aa..a21499d788a3 100644
--- a/atom/browser/api/lib/browser-window.coffee
+++ b/atom/browser/api/lib/browser-window.coffee
@@ -23,6 +23,10 @@ BrowserWindow::_init = ->
     value: BrowserWindow.windows.add(this)
     enumerable: true
 
+  # Route the "new-window" event to webContents.
+  @on 'new-window', (args...) =>
+    @webContents?.emit 'new-window', args...
+
   # Remove the window from weak map immediately when it's destroyed, since we
   # could be iterating windows before GC happened.
   @once 'closed', =>
diff --git a/atom/browser/api/lib/web-contents.coffee b/atom/browser/api/lib/web-contents.coffee
index fa4bed486923..8ddcf361eb6c 100644
--- a/atom/browser/api/lib/web-contents.coffee
+++ b/atom/browser/api/lib/web-contents.coffee
@@ -2,6 +2,10 @@ EventEmitter = require('events').EventEmitter
 binding = process.atomBinding 'web_contents'
 ipc = require 'ipc'
 
+# Routed window.open messages.
+ipc.on 'ATOM_SHELL_WEB_CONTENTS_WINDOW_OPEN', (event, url, name, features) ->
+  event.sender.emit 'new-window', url, name, features
+
 module.exports.wrap = (webContents) ->
   return null unless webContents.isAlive()
 
diff --git a/atom/renderer/lib/override.coffee b/atom/renderer/lib/override.coffee
index d9ece6696bbc..e876e10bacee 100644
--- a/atom/renderer/lib/override.coffee
+++ b/atom/renderer/lib/override.coffee
@@ -1,34 +1,31 @@
 process = global.process
+ipc = require 'ipc'
 remote = require 'remote'
 
-unless process.guestInstanceId?
-  # Override default window.close, see:
+if process.guestInstanceId?
+  # Override default window.close.
   window.close = ->
     remote.getCurrentWindow().close()
 
-  # Override default window.open.
-  window.open = (url, name, features) ->
-    options = {}
-    for feature in features.split ','
-      [name, value] = feature.split '='
-      options[name] =
-        if value is 'yes'
-          true
-        else if value is 'no'
-          false
-        else
-          value
+# Make the browser window or guest view emit "new-window" event.
+window.open = (url, name='', features='') ->
+  options = {}
+  for feature in features.split ','
+    [name, value] = feature.split '='
+    options[name] =
+      if value is 'yes'
+        true
+      else if value is 'no'
+        false
+      else
+        value
+  options.x ?= options.left
+  options.y ?= options.top
+  options.title ?= name
+  options.width ?= 800
+  options.height ?= 600
 
-    options.x ?= options.left
-    options.y ?= options.top
-    options.title ?= name
-    options.width ?= 800
-    options.height ?= 600
-
-    BrowserWindow = require('remote').require 'browser-window'
-    browser = new BrowserWindow options
-    browser.loadUrl url
-    browser
+  ipc.send 'ATOM_SHELL_WEB_CONTENTS_WINDOW_OPEN', url, name, features
 
 # Use the dialog API to implement alert().
 window.alert = (message, title='') ->