Volume Controller

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Volume Controller",
  "short_name": "volumeController",
  "manifest_version": 2,
  "version": "0.4.1",
  "description": "HTML5 video and audio volume controller",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "options_page": "options.html",
  "background": {
    "scripts": [
      "eventPage.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "",
    "default_icon": "icons/icon48.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "js": [
        "inject.js"
      ]
    }
  ]
}