Add TimeFilter test in Tuner VTS

Test: VtsHalTvTunerV1_0TargetTest
Bug: 150953857
Change-Id: I5509f4d368a44a7cb9bbe1b2499a4b4760b510b6
diff --git a/tv/tuner/1.0/default/Demux.h b/tv/tuner/1.0/default/Demux.h
index 6c46b0d..582c107 100644
--- a/tv/tuner/1.0/default/Demux.h
+++ b/tv/tuner/1.0/default/Demux.h
@@ -153,6 +153,11 @@
     std::map<uint32_t, sp<Filter>> mFilters;
 
     /**
+     * Local reference to the opened Timer Filter instance.
+     */
+    sp<TimeFilter> mTimeFilter;
+
+    /**
      * Local reference to the opened DVR object.
      */
     sp<Dvr> mDvr;