Examine source code of Remote Video Player

{
  "manifest_version": 2,
  "name": "Remote Video Player",
  "version": "1.0.0",
  "author": "David Clews",
  "description": "Allows the browser to play supported video files directly in the extension by url.",
  "homepage_url": "https://davidclews.com/articles/65.html",
  "content_scripts": [
    {
      "matches": [
        "*://*.davidclews.com/*"
      ],
      "js": [
        "installed.js"
      ]
    }
  ],
  "page_action": {
    "show_matches": [
      "*://*/*"
    ],
    "default_popup": "popup/default.html",
    "default_icon": {
      "16": "icons/play_16.png",
      "32": "icons/play_32.png",
      "64": "icons/play_64.png",
      "128": "icons/play_128.png"
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/play_16.png",
      "32": "icons/play_32.png",
      "64": "icons/play_64.png",
      "128": "icons/play_128.png"
    }
  },
  "permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{93ec7ae4-6f10-49ad-8a81-788a6a647a06}"
    }
  }
}