Examine source code of ToggleVideoProgressBars

{
  "manifest_version": 2,
  "name": "ToggleVideoProgressBars",
  "version": "1.0.6",
  "description": "Adds the ability to toggle visibility of progress bars etc for various video players! Supports YouTube, Netflix, Amazon, and Vimeo",
  "icons": {
    "16": "icon/main.png",
    "32": "icon/main.png",
    "64": "icon/main.png",
    "128": "icon/main.png"
  },
  "browser_action": {
    "default_icon": {
      "128": "icon/visible.png"
    },
    "browser_style": true,
    "default_title": "ToggleVideoProgressBars Toggle"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "include_globs": [
        "http*://*youtube.*",
        "http*://*youtu.be*",
        "http*://*netflix.*",
        "http*://*amazon.*",
        "http*://*vimeo.*"
      ],
      "js": [
        "src/common.js",
        "src/document.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/common.js",
      "src/background.js"
    ]
  },
  "web_accessible_resources": [
    "style/*.css"
  ],
  "permissions": [
    "storage",
    "contextMenus",
    "<all_urls>",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{af085592-3586-4e82-b2c6-51f8dc083452}"
    }
  }
}