的manifest.json

{
  "manifest_version": 2,"name"            :  "My cool plugin",// the name of the extension
  "version"         :  "1.0",// version number
  "description"     :  "My cool plugin",// description used in the Chrome Webstore
  "background": "background.html","browser_action"  :  {
    "default_title": "My cool plugin","default_icon"   :  "icon.png",// specifies the default icon
      "popup"          :  "popup.html"   // the page to show when the icon is clicked
  },"permissions": [
    "tabs","http://*/","https://*/*"
  ]
}

popup.html和background.html

<div>
    Lorem ipsum dolor sit amet,consectetur adipisicing elit,sed do eiusmod
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
    proident,sunt in culpa qui officia deserunt mollit anim id est laborum.
</div>

问题是什么？