Added introductory tables to Chrome apps APIs.

chrome/common/extensions/docs/templates/intros/storage.html

+<table class="intro">
+  <tr>
+    <th scope="col"></th>
+    <th scope="col"></th>
+  </tr>
+  <tr>
+    <td><strong>Description:</strong></td>
+    <td>Use the <code>chrome.storage</code> module
+    to store, retrieve, and track changes to user data.</td>
+  </tr>
+  <tr>
+    <td><strong>Availability:</strong></td>
+    <td>Google Chrome 20</td>
+  </tr>
+  <tr>
+    <td><strong>Permissions:</strong></td>
+    <td><code>"storage"</code></td>
+  </tr>
+  <tr>
+    <td><strong>Learn more:</strong></td>
+    <td><a href="https://developers.google.com/live/shows/7320022/">Chrome Apps Office Hours: Chrome Storage APIs</a><br>
+    <a href="https://developers.google.com/live/shows/7320022-1/">Chrome Apps Office Hours: Storage API Deep Dive</a></td>
+  </tr>
+</table>
+
+<h2 id="overview">Overview</h2>
+
 <p id="classSummary">
-Use the <code>chrome.storage</code> module
-to store, retrieve, and track changes to user data.
 This API has been optimized
 to meet the specific storage needs of extensions.
 It provides the same storage capabilities as the
 <a href="https://developer.mozilla.org/en/DOM/Storage#localStorage">localStorage API</a>
 with the following key differences:
 </p>
 
 <ul>
   <li>User data can be automatically synced with Chrome sync
   (using <code>storage.sync</code>).</li>
@@ skipping 118 matching lines @@
                 storageChange.oldValue,
                 storageChange.newValue);
   }
 });
 </pre>
 
 <p>
 You can find examples that use this API on the
 <a href="samples.html#sty">Samples page</a>.
 </p>