Google Music Media Keys

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Google Music Media Keys",
  "description": "This extension allows control of Google Music through media keys",
  "version": "0.0.2",
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {},
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "https://play.google.com/music/"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://play.google.com/music/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "commands": {
    "doNextTrack": {
      "suggested_key": {
        "default": "MediaNextTrack"
      },
      "description": "Next track",
      "global": true
    },
    "doPreviousTrack": {
      "suggested_key": {
        "default": "MediaPrevTrack"
      },
      "description": "Previous track",
      "global": true
    },
    "doPlayPause": {
      "suggested_key": {
        "default": "MediaPlayPause"
      },
      "description": "Play / Pause",
      "global": true
    },
    "doStop": {
      "suggested_key": {
        "default": "MediaStop"
      },
      "description": "Stop",
      "global": true
    },
    "doThumbUp": {
      "suggested_key": {
        "default": "Ctrl+Shift+9"
      },
      "description": "Thumb-Up current track",
      "global": true
    },
    "doThumbDown": {
      "suggested_key": {
        "default": "Ctrl+Shift+1"
      },
      "description": "Thumb-Down current track",
      "global": true
    }
  }
}