Examine source code of Xdebug Helper for Firefox

{
  "name": "Xdebug helper",
  "description": "Easy debugging, profiling and tracing extension for Xdebug",
  "version": "1.0.10",
  "author": "Brian Gilbert",
  "manifest_version": 2,
  "minimum_chrome_version": "20",
  "permissions": [
    "tabs",
    "*://*/*"
  ],
  "icons": {
    "16": "images/icon--16.png",
    "48": "images/icon--48.png",
    "128": "images/icon--128.png",
    "256": "images/icon--256.png",
    "512": "images/icon--512.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "page_action": {
    "default_icon": "images/bug-outline.svg",
    "default_title": "Debugging, profiling & tracing",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+X",
        "windows": "Ctrl+Shift+X",
        "mac": "Command+Shift+X"
      },
      "description": "Open popup to toggle state"
    },
    "toggle_debug_action": {
      "suggested_key": {
        "default": "Alt+Shift+X",
        "windows": "Alt+Shift+X",
        "mac": "Alt+Shift+X"
      },
      "description": "Toggle between the debug states"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{806cbba4-1bd3-4916-9ddc-e719e9ca0cbf}"
    }
  }
}