Examine source code of Trace

{
  "manifest_version": 2,
  "name": "__MSG_addon_name__",
  "short_name": "Trace",
  "author": "AbsoluteDouble",
  "description": "__MSG_addon_description__",
  "default_locale": "en",
  "minimum_chrome_version": "41",
  "version": "3.0.7",
  "homepage_url": "https://absolutedouble.co.uk/trace/",
  "options_ui": {
    "page": "html/options.html",
    "chrome_style": false,
    "open_in_tab": true
  },
  "incognito": "spanning",
  "browser_specific_settings": {
    "gecko": {
      "id": "{6ff498ff-a3b6-4891-a614-12a825d4efcf}"
    }
  },
  "browser_action": {
    "default_icon": {
      "32": "icons/trace_32.png",
      "64": "icons/trace_64.png",
      "128": "icons/trace_128.png",
      "256": "icons/trace_256.png"
    },
    "default_title": "Trace | Tracking Protection",
    "default_popup": "html/report.html",
    "browser_style": false
  },
  "commands": {
    "ToggleTraceWeb": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      },
      "description": "Toggle Web Controller"
    },
    "PauseTrace": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Pause Trace"
    },
    "OpenTraceSettings": {
      "suggested_key": {
        "default": "Ctrl+Shift+X",
        "mac": "Command+Shift+X"
      },
      "description": "Open the Trace dashboard"
    }
  },
  "icons": {
    "32": "icons/trace_32.png",
    "64": "icons/trace_64.png",
    "128": "icons/trace_128.png",
    "256": "icons/trace_256.png"
  },
  "permissions": [
    "activeTab",
    "alarms",
    "notifications",
    "privacy",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "js/libraries/cookieparse.js",
      "js/libraries/jquery.js",
      "js/common/data.js",
      "js/common/shared.js",
      "js/background/alarms.js",
      "js/background/background.js",
      "js/background/headers.js",
      "js/background/prefs.js",
      "js/background/session.js",
      "js/background/simple.js",
      "js/background/stats.js",
      "js/background/tabs.js",
      "js/background/vars.js",
      "js/background/web.js",
      "js/background/whitelist.js",
      "js/background/trace.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "js/contentscript/page.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "match_about_blank": false,
      "run_at": "document_start"
    },
    {
      "all_frames": true,
      "js": [
        "js/contentscript/loaded.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "match_about_blank": false,
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "html/blocked.html",
    "js/pages/blocked.js",
    "js/common/ux.js",
    "js/common/shared.js",
    "js/libraries/jquery.js"
  ],
  "content_security_policy": "default-src 'none'; style-src 'unsafe-inline'; object-src 'self'; script-src 'self'; connect-src https://absolutedouble.co.uk https://trace-extension.absolutedouble.co.uk https://raw.githubusercontent.com"
}