Easy Play Music Hotkeys

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Easy Play Music Hotkeys",
  "description": "This extensions allows you to set hotkeys for controlling Google Play Music.",
  "version": "0.2",
  "browser_action": {
    "default_title": "Google Play Music Hotkeys",
    "default_icon": "play.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://play.google.com/music/*"
      ],
      "js": [
        "controls.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "commands": {
    "next_track": {
      "suggested_key": {
        "default": "Alt+Right"
      },
      "description": "Skip to next track"
    },
    "play_pause": {
      "suggested_key": {
        "default": "Alt+P"
      },
      "description": "Play/Pause music"
    },
    "volume_up": {
      "suggested_key": {
        "default": "Alt+Up"
      },
      "description": "Raise volume"
    },
    "volume_down": {
      "suggested_key": {
        "default": "Alt+Down"
      },
      "description": "Lower volume"
    }
  }
}