manifest.json

{
  "manifest_version": 2,

  "name": "Find on Boardgamegeek",
  "description": "Find a game on Boardgamegeek",
  "version": "1.0",

  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },

  "content_scripts": [
    {
      "matches": ["https://www.amazon.com/*"],
      "js": [
        "scripts/content_scripts/content_script.js",
        "scripts/content_scripts/amazon.js"
      ]
    },
    {
      "matches": ["http://www.coolstuffinc.com/*"],
      "js": [
        "scripts/content_scripts/content_script.js",
        "scripts/content_scripts/coolstuffinc.js"
      ]
    },
    {
      "matches": ["http://www.miniaturemarket.com/*"],
      "js": [
        "scripts/content_scripts/content_script.js",
        "scripts/content_scripts/miniature_market.js"
      ]
    },
    {
      "matches": ["http://www.gamesurplus.com/*"],
      "js": [
        "scripts/content_scripts/content_script.js",
        "scripts/content_scripts/game_surplus.js"
      ]
    }
  ],

  "permissions": [
    "activeTab",
    "https://www.boardgamegeek.com/"
  ]
}