Scroll to Top - one press to the top

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Scroll to Top - one press to the top",
  "short_name": "Scroll to Top",
  "description": "An easy way to take a page back to its top",
  "version": "0.3.1",
  "minimum_chrome_version": "26",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "img/icon38_inactive.png",
    "default_title": "Scroll to top"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Z",
        "mac": "Command+Shift+Z"
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' https://www.google-analytics.com/analytics.js; object-src 'self'",
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAveN1gFq4BqWIG7yLKHPHbGXGEmuARPIo2seO5kegP5g50bWGOrokot+ft85KkU7qbSd6sUI+etIVH1+kPIVaou52EWPQwHpJkB53SY6Xtbynh+reFrULni3N6zH5vstWOOV82RMJNpoPp0NEyxDFODRdZHQw+fNTYmP+NFEhWHxNo9F/vEhFRmGfxdcEl/FT4Eypbt8TFcPoOplIDbPODiSMKGCaI0jJoT5cmfsyGT2Ik7vTPjVxIbwcJemXFLgb8G/UkEgDwxQyB0o2hXvgHR9Fz3NE2ieNM7kjBg+H7cRx2QGWbQADe14si11rVJaSxM/GhO8QZkvKfjKNJapuTQIDAQAB"
}