Examine source code of PolyLogoFix

{
  "name": "PolyLogoFix",
  "version": "1.7",
  "description": "Replaces the 'improved' Cal Poly logo with the old one on the portal.",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://polylearn.calpoly.edu/*",
        "*://myportal.calpoly.edu/*",
        "*://cmsweb.calpoly.edu/*"
      ],
      "all_frames": true,
      "js": [
        "js/replace_header.js"
      ]
    },
    {
      "matches": [
        "*://myportal.calpoly.edu/*"
      ],
      "all_frames": true,
      "js": [
        "js/replace_icon.js"
      ]
    },
    {
      "matches": [
        "*://idp.calpoly.edu/*"
      ],
      "all_frames": true,
      "js": [
        "js/replace_header_login.js",
        "js/replace_icon_login.js"
      ]
    },
    {
      "matches": [
        "*://canvas.calpoly.edu/*"
      ],
      "all_frames": true,
      "js": [
        "js/replace_canvas.js"
      ]
    },
    {
      "matches": [
        "*://schedules.calpoly.edu/*"
      ],
      "all_frames": true,
      "js": [
        "js/replace_schedules.js"
      ]
    }
  ],
  "icons": {
    "128": "icons/hand128.png"
  }
}