Use ipcMain in Electron's code

atom/browser/api/lib/browser-window.coffee

@@ -1,6 +1,6 @@
 EventEmitter = require('events').EventEmitter
 app = require 'app'
-ipc = require 'ipc'
+ipc = require 'ipc-main'
 deprecate = require 'deprecate'
 
 BrowserWindow = process.atomBinding('window').BrowserWindow

atom/browser/api/lib/navigation-controller.coffee

@@ -1,4 +1,4 @@
-ipc = require 'ipc'
+ipc = require 'ipc-main'
 
 # The history operation in renderer is redirected to browser.
 ipc.on 'ATOM_SHELL_NAVIGATION_CONTROLLER', (event, method, args...) ->

atom/browser/api/lib/web-contents.coffee

@@ -2,7 +2,7 @@ EventEmitter = require('events').EventEmitter
 Menu = require './menu'
 NavigationController = require './navigation-controller'
 binding = process.atomBinding 'web_contents'
-ipc = require 'ipc'
+ipc = require 'ipc-main'
 
 nextId = 0
 getNextId = -> ++nextId