Examine source code of MyScroller_for_android

{
  "default_locale": "en",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "name": "MyScroller_for_android",
  "version": "1.7.5",
  "icons": {
    "48": "icons/fs_logo_48.png",
    "64": "icons/fs_logo_64.png",
    "96": "icons/fs_logo_96.png"
  },
  "applications": {
    "gecko": {
      "id": "myscroller_ff_android@example.com"
    }
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage",
    "webNavigation"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/fs_icon_16.png",
      "32": "icons/fs_icon_32.png",
      "64": "icons/fs_icon_64.png"
    },
    "default_title": "MyScroller_android"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true,
    "open_in_tab": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/cs_scrolling.js"
      ]
    }
  ]
}