changes to support microsites

Change-Id: I940969333028b8192f5b477675cb38dccba54dd6
diff --git a/src/com/google/doclava/DocFile.java b/src/com/google/doclava/DocFile.java
index e28ad59..2ebf7b7 100644
--- a/src/com/google/doclava/DocFile.java
+++ b/src/com/google/doclava/DocFile.java
@@ -242,6 +242,12 @@
         hdf.setValue("compatibility", "true");
       } else if (filename.indexOf("wear") == 0) {
         hdf.setValue("wear", "true");
+      } else if (filename.indexOf("preview") == 0) {
+        hdf.setValue("preview", "true");
+      } else if (filename.indexOf("auto") == 0) {
+        hdf.setValue("auto", "true");
+      } else if (filename.indexOf("tv") == 0) {
+        hdf.setValue("tv", "true");
       }
       //set metadata for this file in jd_lists_unified
       PageMetadata.setPageMetadata(docfile, relative, outfile, hdf, Doclava.sTaglist);