Control sound

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 2,
    "name": "Control sound",
    "description": "This extension control all the sound in your page",
    "version": "1.0",
    "background": {
        "scripts": [
            "background.js"
        ]
    },
    "browser_action": {
        "default_icon": "icon.png",
        "default_popup": "popup.html",
        "default_title": "Change volume"
    },
    "permissions": [
        "activeTab",
        "tabs",
        "https:\/\/ajax.googleapis.com\/"
    ],
    "content_scripts": [
        {
            "matches": [
                ""
            ],
            "js": [
                "jquery-1.11.3.min.js",
                "background.js"
            ],
            "all_frames": true
        }
    ]
}