Documenting permissions for OAuth tutorial

chrome/common/extensions/docs/static/tut_oauth.html

Index: chrome/common/extensions/docs/static/tut_oauth.html
===================================================================
--- chrome/common/extensions/docs/static/tut_oauth.html	(revision 132824)
+++ chrome/common/extensions/docs/static/tut_oauth.html	(working copy)
@@ -86,6 +86,24 @@
 });
 </pre>
 
+<p>
+To use the OAuth library,
+you must declare the "tabs" permision in the
+<a href="http://code.google.com/chrome/extensions/manifest.html">extension manifest</a>.
+You must also declare the sites you are using
+including the request URL, the authorize URL, access URL,
+and, if necessary, the scope URL.
+For example:
+</p>
+
+<pre>
+"permissions": [ "tabs", "https://docs.google.com/feeds/*",
+  "https://www.google.com/accounts/OAuthGetRequestToken",
+  "https://www.google.com/accounts/OAuthAuthorizeToken",
+  "https://www.google.com/accounts/OAuthGetAccessToken" 
+]
+</pre>
+
 <h3 id="request-token">Fetching and authorizing a request token</h3>
 
 <p>