Google Classroom Grades Filter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Google Classroom Grades Filter",
  "description": "A simple(r) way to filter assignments in your Google Classroom Gradebook",
  "permissions": [],
  "manifest_version": 2,
  "version": "0.1.5",
  "author": "Al Caughey",
  "content_scripts": [
    {
      "matches": [
        "https://classroom.google.com/*c/*"
      ],
      "css": [
        "css/styles.css"
      ],
      "js": [
        "js/filter.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "html/popup.html",
    "default_title": "Grades Filter"
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "images/*.png"
  ]
}