Add a simple cookies sample.

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

 <!-- BEGIN AUTHORED CONTENT -->
 <h2 id="manifest">Manifest</h2>
 
 <p>To use the cookies API,
 you must declare the "cookies" permission in your manifest,
 along with <a href="manifest.html#permissions">host permissions</a>
 for any hosts whose cookies
 you want to access.
 For example:</p>
 
 <pre>{
   "name": "My extension",
   ...
   <b>"permissions": [
     "cookies",
     "*://*.google.com"
   ]</b>,
   ...
 }</pre>
 
+<h2 id="examples"> Examples </h2>
+
+<p>
+You can find a simple example
+of using the cookies API in the
+<a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/api/cookies/">examples/api/cookies</a>
+directory.
+For other examples
+and for help in viewing the source code,
+see <a href="samples.html">Samples</a>.
+</p>
+
 <!-- END AUTHORED CONTENT -->