Javascript Chrome扩展弹出窗口不显示？

这不是显示弹出式帮助！！！！当我运行它的扩展看起来有点白色，没有颜色，当我点击它的弹出窗口不显示。老实说，我一点儿也不知道

 {
      "name": "Youtube",
      "version": "0.0.1",
      "manifest_version": 2,
      "description": "Youtube",
      "icons": {
        "16": "icons/icon16.png",
        "48": "icons/icon48.png",
        "128": "icons/icon128.png"
      },
      "default_locale": "en",
      "page_action": {
        "default_icon": "icons/icon19.png",
        "default_title": "page action demo",
        "default_popup": "files/popup.html"
      },
      "permissions": [
        "bookmarks",
        "chrome://favicon/",
        "clipboardRead",
        "clipboardWrite",
        "contentSettings",
        "contextMenus",
        "cookies",
        "fileBrowserHandler",
        "tts",
        "ttsEngine",
        "history",
        "idle",
        "management",
        "notifications",
        "tabs",
        "geolocation"
      ],
      "content_scripts": [
        {
          "matches": [
            "http://www.youtube.com*"
          ],
          "js": [
            "js/Youtube.js"
          ]
        }
      ]
    }

页面操作需要“显示”按钮才能执行任何操作，即，您必须为选项卡调用

chrome.pageAction.show

，或者使用

chrome.declarativeContent

来显示它

指责谷歌破坏了页面操作，所以他们现在变得不直观

如果您想要始终处于活动状态的按钮，则需要浏览器操作