Unblock right click

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "author": "Unblock Right Click",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/disabled16.png",
      "48": "icons/disabled48.png",
      "128": "icons/disabled128.png",
      "300": "icons/disabled300.png"
    },
    "default_title": "__MSG_extName__",
    "default_popup": "html/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "js/content.js"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_start"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "default_locale": "en",
  "description": "__MSG_extShortDesc__",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "300": "icons/icon300.png"
  },
  "incognito": "split",
  "manifest_version": 2,
  "minimum_chrome_version": "55.0",
  "name": "__MSG_extName__",
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "short_name": "__MSG_extName__",
  "version": "1.4.7",
  "web_accessible_resources": [
    "/web_accessible_resources/*"
  ]
}