Examine source code of Panorama Tab Groups

{
  "manifest_version": 2,
  "name": "Panorama Tab Groups",
  "description": "Tab Groups with Panorama View",
  "version": "0.8.12",
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "panorama-tab-groups@example.com"
    }
  },
  "icons": {
    "16": "icons/logo/logo-16.png",
    "24": "icons/logo/logo-24.png",
    "32": "icons/logo/logo-32.png",
    "48": "icons/logo/logo-48.png",
    "64": "icons/logo/logo-64.png",
    "96": "icons/logo/logo-96.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F"
      },
      "description": "Toggle Panorama View"
    },
    "activate-next-group": {
      "suggested_key": {
        "default": "Alt+W"
      },
      "description": "Switch to the next Tab Group"
    },
    "activate-previous-group": {
      "suggested_key": {
        "default": "Alt+Shift+W"
      },
      "description": "Switch to the previous Tab Group"
    }
  },
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/icon.svg",
    "theme_icons": [
      {
        "light": "icons/icon_light.svg",
        "dark": "icons/icon.svg",
        "size": 16
      },
      {
        "light": "icons/icon_light.svg",
        "dark": "icons/icon.svg",
        "size": 32
      }
    ],
    "default_popup": "popup-view/index.html"
  },
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "tabHide",
    "storage",
    "sessions",
    "downloads",
    "menus"
  ]
}