Sync style changes from external (sync3).

Change-Id: I590557ccc3bde1172e80f5a9bc0a2be2f30e23b8
diff --git a/tools/droiddoc/templates-sdk/customizations.cs b/tools/droiddoc/templates-sdk/customizations.cs
index c955c87..92e506a 100644
--- a/tools/droiddoc/templates-sdk/customizations.cs
+++ b/tools/droiddoc/templates-sdk/customizations.cs
@@ -482,7 +482,7 @@
 def:header_search_widget() ?>
   <div class="dac-header-search" id="search-container">
     <div class="dac-header-search-inner">
-      <div class="dac-header-search-btn" id="search-btn"></div>
+      <div class="dac-sprite dac-search dac-header-search-btn" id="search-btn"></div>
       <form class="dac-header-search-form" onsubmit="return submit_search()">
         <input id="search_autocomplete" type="text" value="" autocomplete="off" name="q"
           onfocus="search_focus_changed(this, true)" onblur="search_focus_changed(this, false)"