Examine source code of YouTube No Annotations

{
  "name": "YouTube™ No Annotations",
  "short_name": "iynannotations",
  "description": "Prevents YouTube HTML5 and Flash players from auto-enabling video annotations",
  "author": "James Fray",
  "version": "0.1.5resigned1",
  "manifest_version": 2,
  "permissions": [
    "storage"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "common.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/watch*"
      ],
      "js": [
        "data/inject.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "homepage_url": "http://add0n.com/youtube-tools.html?from=annotations",
  "icons": {
    "16": "data/icons/16.png",
    "19": "data/icons/19.png",
    "32": "data/icons/32.png",
    "38": "data/icons/38.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png",
    "512": "data/icons/512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{df5be453-edae-41a8-9bb9-3cd0fda1ac10}"
    }
  }
}