Fix some mixed content warnings when accessing extension docs

chrome/common/extensions/docs/template/api_template.html

   <div id="gc-container" class="labs">
       <div id="devModeWarning">
         You are viewing extension docs in chrome via the 'file:' scheme: are you expecting to see local changes when you refresh? You'll need run chrome with --allow-file-access-from-files.
       </div>
       <!-- SUBTEMPLATES: DO NOT MOVE FROM THIS LOCATION -->
       <!-- In particular, sub-templates that recurse, must be used by allowing
            jstemplate to make a copy of the template in this section which
            are not operated on by way of the jsskip="true" -->
       <div jsskip="true" style="display:none">
 
@@ skipping 153 matching lines @@
             <div id="gsc-search-box">
               <input type="hidden" name="cx" value="002967670403910741006:61_cvzfqtno" />
               <input type="hidden" name="ie" value="UTF-8" />
               <input type="text" name="q" value="" size="55" />
               <input class="gsc-search-button" type="submit" name="sa" value="Search" />
               <br>
               <span class="greytext">e.g. "page action" or "tabs"</span>
             </div>
           </form>
 
-          <script type="text/javascript" src="http://www.google.com/jsapi"></script>
+          <script type="text/javascript" src="https://www.google.com/jsapi"></script>
           <script type="text/javascript">google.load("elements", "1", {packages: "transliteration"});</script>
-          <script type="text/javascript" src="http://www.google.com/coop/cse/t13n?form=cse&t13n_langs=en"></script>
-          <script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=cse&lang=en"></script>
+          <script type="text/javascript" src="https://www.google.com/coop/cse/t13n?form=cse&t13n_langs=en"></script>
+          <script type="text/javascript" src="https://www.google.com/coop/cse/brand?form=cse&lang=en"></script>
         </td>
       </tr>
     </table>
 
     <div id="codesiteContent" jsvalues=".className: showSideNav() ? '' : 'hideSideNav'">
 
       <a id="gc-topnav-anchor"></a>
       <div id="gc-topnav">
         <h1>Google Chrome Extensions (<a href="http://code.google.com/labs/">Labs</a>)</h1>
         <ul id="home" class="gc-topnav-tabs">
@@ skipping 332 matching lines @@
   the content of this page is licensed under the <a rel="license"
   href="http://creativecommons.org/licenses/by/3.0/">Creative Commons
   Attribution 3.0 License</a>, and code samples are licensed under the
   <a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>.
   </p>
   <p>
   &copy;2011 Google
   </p>
 
 <!-- begin analytics -->
-<script src="http://www.google-analytics.com/urchin.js" type="text/javascript"></script>
-<script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script>
+<script src="https://www.google-analytics.com/urchin.js" type="text/javascript"></script>
+<script src="https://www.google-analytics.com/ga.js" type="text/javascript"></script>
 
 <script type="text/javascript">
   // chrome doc tracking
   try {
     var engdocs = _gat._getTracker("YT-10763712-2");
     engdocs._trackPageview();
   } catch(err) {}
 
   // code.google.com site-wide tracking
   try {
     _uacct="UA-18071-1";
     _uanchor=1;
     _uff=0;
     urchinTracker();
   }
   catch(e) {/* urchinTracker not available. */}
 </script>
 <!-- end analytics -->
       </div>
     </div> <!-- /gc-footer -->
   </div> <!-- /gc-container -->