Add chrome.i18n to the list of chrome.* APIs.

TBR=rafaelw,aa

Review URL: http://codereview.chromium.org/196074

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25838 0039d316-1c4b-4281-b951-d872f2087c98

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

@@ -10,6 +10,7 @@ Here are the supported chrome.* APIs:
 <ul>
   <li><a href="bookmarks.html">bookmarks</a></li>
   <li><a href="extension.html">extension</a></li>
+  <li><a href="i18n.html">i18n</a></li>
   <li><a href="pageActions.html">pageActions</a></li>
   <li><a href="tabs.html">tabs</a></li>
   <li><a href="toolstrip.html">toolstrip</a></li>