Switch Tab Shortcut

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Switch Tab Shortcut",
  "permissions": [
    "tabs"
  ],
  "version": "1.0",
  "description": "Customize chrome shortcut to switch tabs",
  "commands": {
    "next-tab": {
      "suggested_key": {
        "default": "Ctrl+Right",
        "mac": "Command+Right"
      },
      "description": "Next tab"
    },
    "prev-tab": {
      "suggested_key": {
        "default": "Ctrl+Left",
        "mac": "Command+Left"
      },
      "description": "Prev tab"
    }
  },
  "background": {
    "scripts": [
      "main.js"
    ],
    "persistent": false
  }
}