Examine source code of WIPDeveloper.com Tools

{
  "name": "__MSG_appName__",
  "version": "0.0.8",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "images/icon-16.png",
    "19": "images/icon-19.png",
    "38": "images/icon-38.png",
    "128": "images/icon-128.png"
  },
  "default_locale": "en",
  "content_scripts": [
    {
      "matches": [
        "https://developer.salesforce.com//*"
      ],
      "js": [
        "scripts/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/chromereload.js",
      "scripts/background.js"
    ]
  },
  "permissions": [
    "tabs",
    "clipboardRead",
    "contextMenus"
  ],
  "browser_action": {
    "default_icon": {
      "19": "images/icon-19.png",
      "38": "images/icon-38.png"
    },
    "default_title": "WIPDeveloper Tools",
    "default_popup": "popup.html"
  },
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'"
}