add support for gms javadocs

Change-Id: Ieecf09794373a176430f554f39e1c632a7013519
diff --git a/tools/droiddoc/templates-sdk/gms_navtree_data.cs b/tools/droiddoc/templates-sdk/gms_navtree_data.cs
new file mode 100644
index 0000000..66b7d55
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/gms_navtree_data.cs
@@ -0,0 +1,3 @@
+var GMS_NAVTREE_DATA =
+<?cs var:reference_tree ?>
+;