title: Can't load facebook js sdk from Chrome extension
body: <p>I'm trying to use facebook sj sdk in a Chrome extension.
  Im doing this on my extension init:</p>
  
  <pre><code>window.fbAsyncInit = function() {
          // init the FB JS SDK
          FB.init({
              appId: 'APP_ID', // App ID from the App Dashboard
              //channelUrl : '//www.example.com/', // Channel File for x-domain communication
              status: true, // check the login status upon init?
              cookie: true, // set sessions cookies to allow your server to access the session?
              xfbml: true  // parse XFBML tags on this page?
          });
  
          // Additional initialization code such as adding Event Listeners goes here
          console.log(FB);
  
      };
  
      // Load the SDK's source Asynchronously
      (function(d, debug) {
          var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
          if (d.getElementById(id)) {
              return;
          }
          js = d.createElement('script');
          js.id = id;
          js.async = true;
          js.src = "http://connect.facebook.net/en_US/all" + (debug ? "/debug" : "") + ".js";
          ref.parentNode.insertBefore(js, ref);
      }(document, /*debug*/false));
  </code></pre>
  
  <p>I'm getting this error:</p>
  
  <p><strong>Refused to load the script 'http://connect.facebook.net/en_US/all.js' because it violates the following Content Security Policy directive: "script-src 'self' chrome-extension-resource:".</strong></p>
  
  <p>I have the permissiosn in manifest set to <code>http://*/</code>. How can I load the sdk from an extension?</p>