Extension for Gmail Basic HTML View

manifest.json

{
  "manifest_version": 2,
  "name": "Extension for Gmail Basic HTML View",
  "description": "Add functions for Gmail Basic HTML view",
  "icons": {
    "48": "gmail_red.png"
  },
  "version": "2.1resigned1",
  "author": "backy0175",
  "content_scripts": [
    {
      "matches": [
        "*://mail.google.com/*"
      ],
      "js": [
        "contents.js"
      ]
    }
  ],
  "applications": {
    "gecko": {
      "id": "@extension-for-gmail-basic-html-view",
      "strict_min_version": "42.0"
    }
  }
}