GUAC-1193: Create connection history interface, and add simple implementation.

extensions/guacamole-auth-ldap/src/main/java/org/glyptodon/guacamole/auth/ldap/user/UserContext.java

@@ -35,10 +35,12 @@ import org.glyptodon.guacamole.net.auth.AuthenticatedUser;
 import org.glyptodon.guacamole.net.auth.AuthenticationProvider;
 import org.glyptodon.guacamole.net.auth.Connection;
 import org.glyptodon.guacamole.net.auth.ConnectionGroup;
+import org.glyptodon.guacamole.net.auth.ConnectionRecordSet;
 import org.glyptodon.guacamole.net.auth.Directory;
 import org.glyptodon.guacamole.net.auth.User;
 import org.glyptodon.guacamole.net.auth.simple.SimpleConnectionGroup;
 import org.glyptodon.guacamole.net.auth.simple.SimpleConnectionGroupDirectory;
+import org.glyptodon.guacamole.net.auth.simple.SimpleConnectionRecordSet;
 import org.glyptodon.guacamole.net.auth.simple.SimpleDirectory;
 import org.glyptodon.guacamole.net.auth.simple.SimpleUser;
 import org.slf4j.Logger;
@@ -194,6 +196,12 @@ public class UserContext implements org.glyptodon.guacamole.net.auth.UserContext
         return new SimpleDirectory<ActiveConnection>();
     }
 
+    @Override
+    public ConnectionRecordSet getConnectionHistory()
+            throws GuacamoleException {
+        return new SimpleConnectionRecordSet();
+    }
+
     @Override
     public Collection<Form> getUserAttributes() {
         return Collections.<Form>emptyList();