Save Image to Pinterest on Right Click

manifest.json

{
  "browser_action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    }
  },
  "applications": {
    "gecko": {
      "id": "{8d83291b-ee1f-4570-b747-ea1e17161e0a}"
    }
  },
  "content_scripts": [
    {
      "js": [
        "scripts/preload.js",
        "scripts/rightclick.handler.js",
        "scripts/contentscript.js",
        "scripts/postload.js",
        "scripts/imgseek.js"
      ],
      "css": [
        "style/contentstyle.css"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js",
      "center.js",
      "rules.js",
      "scripts/support.js",
      "scripts/update.js"
    ]
  },
  "description": "__MSG_appDesc__",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "options_page": "options.html",
  "permissions": [
    "tabs",
    "storage",
    "management",
    "webRequest",
    "activeTab",
    "downloads",
    "contextMenus",
    "webRequestBlocking",
    "<all_urls>",
    "http://*/*",
    "https://*/*",
    "cookies"
  ],
  "version": "67.2.0",
  "default_locale": "en",
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self';",
  "web_accessible_resources": [
    "setup/*",
    "style/*"
  ]
}