Examine source code of BMHome

{
  "name": "BMHome",
  "version": "1.5.1",
  "manifest_version": 2,
  "description": "Show bookmarks and open tabs in homepage",
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png"
  },
  "permissions": [
    "tabs",
    "bookmarks"
  ],
  "omnibox": {
    "keyword": "bm"
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "chrome_url_overrides": {
    "newtab": "page.html"
  },
  "background": {
    "scripts": [
      "util.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/32.png",
    "default_title": "Click to put this tab to bookmark"
  }
}