test: move some fixtures from spec/ to spec-main/ (#21403)

spec/fixtures/extensions/chrome-api/main.js

@@ -1,39 +0,0 @@
-/* global chrome */
-
-chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
-  sendResponse(message)
-})
-
-const testMap = {
-  connect () {
-    let success = false
-    try {
-      chrome.runtime.connect(chrome.runtime.id)
-      chrome.runtime.connect(chrome.runtime.id, { name: 'content-script' })
-      chrome.runtime.connect({ name: 'content-script' })
-      success = true
-    } finally {
-      console.log(JSON.stringify(success))
-    }
-  },
-  getManifest () {
-    const manifest = chrome.runtime.getManifest()
-    console.log(JSON.stringify(manifest))
-  },
-  sendMessage (message) {
-    chrome.runtime.sendMessage({ method: 'sendMessage', args: [message] }, response => {
-      console.log(JSON.stringify(response))
-    })
-  },
-  executeScript (code) {
-    chrome.runtime.sendMessage({ method: 'executeScript', args: [code] }, response => {
-      console.log(JSON.stringify(response))
-    })
-  }
-}
-
-const dispatchTest = (event) => {
-  const { method, args = [] } = JSON.parse(event.data)
-  testMap[method](...args)
-}
-window.addEventListener('message', dispatchTest, false)