This is a follow-up to I6934d03e (no 6414). Declare tables in $this->tablesUsed to allow for database clenaup, as Aaron suggested. Change-Id: Iac05b0428b335879729f6d3b993eac0d3151429c
New tests are added to avoid regressions when the ContentHandler facility is introduced. Change-Id: I6934d03e9df74930998d771f64fe4f4fe5555967