refactor: implement Chrome Extension APIs without the remote module (#16686)

* refactor: implement Chrome Extension APIs without the remote module

* remove unused potentiallyRemoteRequire

lib/browser/chrome-extension.js

@@ -10,6 +10,7 @@ const { Buffer } = require('buffer')
 const fs = require('fs')
 const path = require('path')
 const url = require('url')
+const util = require('util')
 
 // Mapping between extensionId(hostname) and manifest.
 const manifestMap = {} // extensionId => manifest
@@ -226,6 +227,65 @@ ipcMainUtils.handleSync('CHROME_GET_MESSAGES', function (event, extensionId) {
   return fs.readFileSync(messagesPath)
 })
 
+const validStorageTypes = new Set(['sync', 'local'])
+
+const getChromeStoragePath = (storageType, extensionId) => {
+  if (!validStorageTypes.has(storageType)) {
+    throw new Error(`Invalid storageType: ${storageType}`)
+  }
+
+  if (!manifestMap[extensionId]) {
+    throw new Error(`Invalid extensionId: ${extensionId}`)
+  }
+
+  return path.join(app.getPath('userData'), `/Chrome Storage/${extensionId}-${storageType}.json`)
+}
+
+const mkdirp = util.promisify((dir, callback) => {
+  fs.mkdir(dir, (error) => {
+    if (error && error.code === 'ENOENT') {
+      mkdirp(path.dirname(dir), (error) => {
+        if (!error) {
+          mkdirp(dir, callback)
+        }
+      })
+    } else if (error && error.code === 'EEXIST') {
+      callback(null)
+    } else {
+      callback(error)
+    }
+  })
+})
+
+const readFile = util.promisify(fs.readFile)
+const writeFile = util.promisify(fs.writeFile)
+
+ipcMainUtils.handle('CHROME_STORAGE_READ', async function (event, storageType, extensionId) {
+  const filePath = getChromeStoragePath(storageType, extensionId)
+
+  try {
+    return await readFile(filePath, 'utf8')
+  } catch (error) {
+    if (error.code === 'ENOENT') {
+      return null
+    } else {
+      throw error
+    }
+  }
+})
+
+ipcMainUtils.handle('CHROME_STORAGE_WRITE', async function (event, storageType, extensionId, data) {
+  const filePath = getChromeStoragePath(storageType, extensionId)
+
+  try {
+    await mkdirp(path.dirname(filePath))
+  } catch (error) {
+    // we just ignore the errors of mkdir or mkdirp
+  }
+
+  return writeFile(filePath, data, 'utf8')
+})
+
 const isChromeExtension = function (pageURL) {
   const { protocol } = url.parse(pageURL)
   return protocol === 'chrome-extension:'