Cloned templates-sdk to create baseline for templates-ndk

Change-Id: I34f3eccc02fab99f43e01ae4e51c1027193acd9a
diff --git a/tools/droiddoc/templates-ndk/gms_navtree_data.cs b/tools/droiddoc/templates-ndk/gms_navtree_data.cs
new file mode 100644
index 0000000..66b7d55
--- /dev/null
+++ b/tools/droiddoc/templates-ndk/gms_navtree_data.cs
@@ -0,0 +1,3 @@
+var GMS_NAVTREE_DATA =
+<?cs var:reference_tree ?>
+;