Examine source code of MinePic

{
  "manifest_version": 2,
  "name": "MinePic",
  "version": "1.2.0",
  "description": "Open/view images without being blocked by sneaky overlapping elements.",
  "icons": {
    "48": "icon.png",
    "96": "icon-x2.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "permissions": [
    "menus"
  ]
}