Examine source code of Were You Typing

{
  "name": "__MSG_extensionName__",
  "author": "Terry",
  "version": "0.2.3",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "24": "icon_24.png",
    "48": "icon_48.png",
    "96": "icon_96.png",
    "128": "icon_128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/content.js"
      ],
      "css": [
        "/content.css"
      ],
      "all_frames": false,
      "match_about_blank": false,
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "web_accessible_resources": [
    "KeypressDelete.ogg"
  ]
}