Examine source code of YouTube Content Blocker

{
  "name": "YouTube Content Blocker",
  "version": "0.5.0",
  "description": "YouTube™ content blocker",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*",
        "https://m.youtube.com/*"
      ],
      "js": [
        "src/scripts/content_script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "src/scripts/inject.js"
  ],
  "browser_action": {
    "default_title": "YouTube Content Blocker Options",
    "default_icon": {
      "16": "assets/icons/16.png",
      "48": "assets/icons/48.png",
      "128": "assets/icons/128.png"
    }
  },
  "options_ui": {
    "page": "src/ui/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "background": {
    "scripts": [
      "src/scripts/background.js"
    ]
  },
  "icons": {
    "16": "assets/icons/16.png",
    "48": "assets/icons/48.png",
    "128": "assets/icons/128.png"
  },
  "homepage_url": "https://github.com/josephcrowell/youtube-content-blocker",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4666216d-ddfe-4fd9-8525-600e0e7798e4}"
    }
  }
}