Don't show "set default" for directory contacts

Directory contacts don't allow setting (or clearing) of defaults
so don't populate those actions on the context menu.

Bug: 6563335
Change-Id: Ib96af2dd875c5fefe771360b05df39c01bec7c38
diff --git a/src/com/android/contacts/detail/ContactDetailFragment.java b/src/com/android/contacts/detail/ContactDetailFragment.java
index 3dfaf8d..3773bda 100644
--- a/src/com/android/contacts/detail/ContactDetailFragment.java
+++ b/src/com/android/contacts/detail/ContactDetailFragment.java
@@ -1862,6 +1862,11 @@
         menu.add(ContextMenu.NONE, ContextMenuIds.COPY_TEXT,
                 ContextMenu.NONE, getString(R.string.copy_text));
 
+        // Don't allow setting or clearing of defaults for directory contacts
+        if (mContactData.isDirectoryEntry()) {
+            return;
+        }
+
         String selectedMimeType = selectedEntry.mimetype;
 
         // Defaults to true will only enable the detail to be copied to the clipboard.