Volume Booster

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "permissions": [
    "<all_urls>",
    "tabCapture",
    "tabs",
    "storage"
  ],
  "manifest_version": 2,
  "name": "Volume Booster",
  "description": "The easiest way to boost sound in the Chrome browser",
  "version": "1.4",
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/chrome.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/content.js"
      ]
    }
  ],
  "icons": {
    "128": "media/logo_128.png"
  },
  "browser_action": {
    "default_icon": "media/logo_128.png",
    "default_popup": "popup.html"
  }
}