manifest.json

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "short_name": "__MSG_extShortName__",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "version": "2.0",
  "icons": {
    "16": "soundcloud.png",
    "48": "soundcloud.png",
    "128": "soundcloud.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "soundcloud.png",
      "38": "soundcloud.png"
    },
    "default_popup": "popup.html"
  },
  "background": {
    "page": "background.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "commands": {
    "play-or-pause": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+A"
      },
      "description": "Play or pause song",
      "global": true
    },
    "repeat": {
      "description": "Toggle repeat current",
      "global": true
    },
    "next": {
      "description": "Go to next song",
      "global": true
    },
    "previous": {
      "description": "Go to previous song",
      "global": true
    }
  },
  "permissions": [
    "activeTab",
    "*://soundcloud.com/*",
    "*://extensions/*",
    "tabs",
    "storage"
  ]
}