Updates for new doclava customizations

Change-Id: I98f45e3fe92953968014b2d6589515ca39a5c920
diff --git a/tools/droiddoc/templates-pdk/components/left_nav.cs b/tools/droiddoc/templates-pdk/components/left_nav.cs
new file mode 100644
index 0000000..a6d0ae3
--- /dev/null
+++ b/tools/droiddoc/templates-pdk/components/left_nav.cs
@@ -0,0 +1,15 @@
+<?cs def:custom_left_nav() ?>
+  <?cs if:doc.hidenav != "true" ?>
+    <?cs if:doc.type == "source" ?>
+      <?cs call:source_nav() ?>
+    <?cs elif:doc.type == "porting" ?>
+      <?cs call:porting_nav() ?>
+    <?cs elif:doc.type == "compatibility" ?>
+      <?cs call:compatibility_nav() ?>
+    <?cs elif:doc.type == "community" ?>
+      <?cs call:community_nav() ?>
+    <?cs elif:doc.type == "about" ?>
+      <?cs call:about_nav() ?>
+    <?cs /if ?>
+  <?cs /if ?>
+<?cs /def ?>