Examine source code of Articlue

{
  "manifest_version": 2,
  "default_locale": "ja",
  "name": "__MSG_extension_name__",
  "description": "__MSG_extension_description__",
  "version": "1.0",
  "author": "__MSG_author__",
  "icons": {
    "48": "images/icon-48.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png",
    "512": "images/icon-512.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_action": {
    "default_title": "Articlue",
    "default_icon": {
      "16": "images/toolbar-icon-16.png",
      "19": "images/toolbar-icon-19.png",
      "32": "images/toolbar-icon-32.png",
      "38": "images/toolbar-icon-38.png"
    }
  },
  "permissions": [
    "tabs"
  ]
}