Examine source code of Google Reverse Image Search

{
  "description": "Google Reverse Image Search is a simple tool that lets you search the images reversely on Google Images.",
  "homepage_url": "http://barisderin.com",
  "manifest_version": 2,
  "default_locale": "en",
  "name": "Google Reverse Image Search",
  "version": "64.1.1resigned1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Google Reverse Image Search"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/content_script.js"
      ],
      "css": [
        "style/contentstyle.css"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "scripts/content_script_st.js"
      ],
      "matches": [
        "*://*.barisderin.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "48": "images/icon48.png"
  },
  "permissions": [
    "contextualIdentities",
    "cookies",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "contextMenus",
    "storage",
    "downloads",
    "<all_urls>"
  ],
  "applications": {
    "gecko": {
      "id": "{95322c08-05ff-4f3c-85fd-8ceb821988dd}"
    }
  }
}