Define It - Search in the Oxford Dictionary

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Define It - Search in the Oxford Dictionary",
  "short_name": "Define It",
  "version": "1.0.0",
  "description": "Opens word of phrase definitions in the Oxford English Dictionary.",
  "author": "Volodymyr Pantasenko",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "contextMenus",
    "tabs",
    "activeTab",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "all_frames": true,
      "js": [
        "content.js"
      ]
    }
  ],
  "commands": {
    "search_in_dictionary": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "windows": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      },
      "description": "Search in dictionary",
      "global": false
    }
  },
  "browser_action": {
    "default_title": "Define It - Search in the Oxford Dictionary",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/images/icon/icon16.png",
      "48": "assets/images/icon/icon48.png",
      "96": "assets/images/icon/icon96.png",
      "128": "assets/images/icon/icon128.png"
    }
  },
  "icons": {
    "16": "assets/images/icon/icon16.png",
    "48": "assets/images/icon/icon48.png",
    "96": "assets/images/icon/icon96.png",
    "128": "assets/images/icon/icon128.png"
  }
}