Hide Google Drive features

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Hide Google Drive features",
  "description": "Disables various functions of Google Docs, Sheets, Slides, Drawings, Forms and Sites. Useful in classrooms.",
  "version": "1.1.6",
  "author": "blade.sk - for ytcte.org",
  "icons": {
    "48": "images/icon_48.png",
    "128": "images/icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.google.com/*",
        "http://*.google.com/*",
        "https://*.kamihq.com/*"
      ],
      "js": [
        "js/contentScripts.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "https://*.google.com/*",
    "http://*.google.com/*",
    "https://*.kamihq.com/*"
  ],
  "storage": {
    "managed_schema": "schema.json"
  }
}