Double click to clipboard

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Double click to clipboard",
  "description": "Double click copy to clipboard",
  "version": "1.0",
  "icons": {
    "16": "images/empty_16.png",
    "32": "images/empty_32.png",
    "48": "images/empty_48.png",
    "64": "images/empty_64.png",
    "128": "images/empty_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content_scripts/end.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "http://*/",
    "https://*/",
    "clipboardRead",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/empty_16.png",
      "32": "images/empty_32.png",
      "48": "images/empty_48.png",
      "64": "images/empty_64.png",
      "128": "images/empty_128.png"
    },
    "default_title": "Double click to clipboard"
  }
}