docs: add sampleindex file for droiddoc to customize the breadcrumbs

Change-Id: If777ebb3cfe4887ec8ce8f746b9ec83b82035b37
diff --git a/tools/droiddoc/templates-sdk/sampleindex.cs b/tools/droiddoc/templates-sdk/sampleindex.cs
new file mode 100644
index 0000000..81ba68c
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/sampleindex.cs
@@ -0,0 +1,53 @@
+<?cs include:"doctype.cs" ?>
+<?cs include:"macros.cs" ?>
+<?cs set:resources="true" ?>
+<html>
+<?cs include:"head_tag.cs" ?>
+<?cs include:"header.cs" ?>
+<body class="gc-documentation">
+
+
+<a name="top"></a>
+<div class="g-unit" id="doc-content">
+ <div id="jd-header" class="guide-header">
+    <span class="crumb">
+      <a href="<?cs var:toroot ?>resources/browser.html?tag=sample">Sample Code</a> >
+    </span>
+  <h1><?cs var:page.title ?></h1>
+ </div>
+
+<div id="jd-content">
+<p><a href="../index.html">&larr; Back</a></p>
+
+<?cs var:summary ?>
+
+  <?cs if:subcount(subdirs) ?>
+      <h2>Subdirectories</h2>
+      <ul class="nolist">
+      <?cs each:dir=subdirs ?>
+        <li><a href="<?cs var:dir.name ?>/index.html"><?cs
+          var:dir.name ?>/</a></li>
+      <?cs /each ?>
+      </ul>
+  <?cs /if ?>
+
+  <?cs if:subcount(files) ?>
+      <h2>Files</h2>
+      <ul class="nolist">
+      <?cs each:file=files ?>
+        <li><a href="<?cs var:file.href ?>"><?cs
+          var:file.name ?></a></li>
+      <?cs /each ?>
+      </ul>
+  <?cs /if ?>
+
+</div><!-- end jd-content -->
+
+<?cs include:"footer.cs" ?>
+
+</div><!-- end doc-content -->
+
+<?cs include:"trailer.cs" ?>
+
+</body>
+</html>