refactor: implement ipcRenderer.sendTo in native code for better performance (#14285)

lib/browser/rpc-server.js

@@ -5,7 +5,7 @@ const {EventEmitter} = require('events')
 const fs = require('fs')
 const v8Util = process.atomBinding('v8_util')
 
-const {ipcMain, isPromise, webContents} = electron
+const {ipcMain, isPromise} = electron
 
 const objectsRegistry = require('./objects-registry')
 const bufferUtils = require('../common/buffer-utils')
@@ -417,20 +417,6 @@ ipcMain.on('ELECTRON_BROWSER_ASYNC_CALL_TO_GUEST_VIEW', function (event, context
   }
 })
 
-ipcMain.on('ELECTRON_BROWSER_SEND_TO', function (event, sendToAll, webContentsId, channel, ...args) {
-  let contents = webContents.fromId(webContentsId)
-  if (!contents) {
-    console.error(`Sending message to WebContents with unknown ID ${webContentsId}`)
-    return
-  }
-
-  if (sendToAll) {
-    contents.sendToAll(channel, ...args)
-  } else {
-    contents.send(channel, ...args)
-  }
-})
-
 // Implements window.close()
 ipcMain.on('ELECTRON_BROWSER_WINDOW_CLOSE', function (event) {
   const window = event.sender.getOwnerBrowserWindow()