Examine source code of Sound clouds

{
  "manifest_version": 2,
  "name": "Sound clouds",
  "version": "1.0",
  "description": "The sound cloud icon is commonly used to represent storing, sharing or playing audio via the cloud platform. It is also the signature icon of the SoundCloud service – a popular online music listening platform.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Click me!"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8d40e346-8790-405f-9063-34ba342fd54b}"
    }
  }
}