manifest.json

{
  "name": "Sample - OAuth Test",
  "version": "1.0.0",
  "icons": { "48": "img/icon-48.png",
            "128": "img/icon-128.png" },
  "description": "Uses OAuth to connect to Google's User Info service and display User Information.",
  "background": {
    "scripts": [
      "chrome_ex_oauthsimple.js",
      "chrome_ex_oauth.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "",
    "default_icon": "img/icon-19-off.png"
  },
  "permissions": [
    "tabs",
	"unlimitedStorage",
	"https://www.googleapis.com/auth/userinfo.profile",
	"https://www.googleapis.com/auth/userinfo.email",
    "https://www.googleapis.com/oauth2/v2/userinfo",
    "https://www.google.com/accounts/OAuthGetRequestToken",
    "https://www.google.com/accounts/OAuthAuthorizeToken",
    "https://www.google.com/accounts/OAuthGetAccessToken"
  ]
}