{
  "name": "SilverDog",
  "description": "Filters inaudible beacons used for device tracking",
  "version": "1.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "name": "Enable/Disable ultrasound filtering"
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "permissions": [
    "storage"
  ],
  "icons": {
    "128": "icon.png"
  },
  "manifest_version": 2,
  "web_accessible_resources": [
    "intercept.js"
  ]
}

{
  "name": "SilverDog",
  "description": "Filters inaudible beacons used for device tracking",
  "version": "1.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "name": "Enable/Disable ultrasound filtering"
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "permissions": [
    "storage",
    "tabs"
  ],
  "icons": {
    "128": "icon.png"
  },
  "manifest_version": 2,
  "web_accessible_resources": [
    "intercept.js"
  ]
}

Add "tabs" to the permissions list as the code uses it reqularly
Add "tabs" to the permissions list as the code uses it reqularly
