Examine source code of Password Paster

{
  "manifest_version": 2,
  "name": "Password Paster",
  "description": "Paste password in those website's input field where Ctrl+V doesn't functions",
  "version": "0.0.4",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "48": "icons/icon_48.png",
    "64": "icons/icon_64.png",
    "96": "icons/icon_96.png",
    "128": "icons/icon_128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon_16.png",
      "32": "icons/icon_32.png",
      "48": "icons/icon_48.png",
      "64": "icons/icon_64.png",
      "96": "icons/icon_96.png",
      "128": "icons/icon_128.png"
    },
    "default_popup": "browserAction/index.html",
    "default_title": "Password Paster"
  },
  "content_scripts": [
    {
      "js": [
        "utils/browser-polyfill.min.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    },
    {
      "js": [
        "contentScripts/paster.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{50077bfe-5d27-4c54-9c93-4a3e2242c381}"
    }
  }
}