No-op fix for playback tests

super.onQueueInputBuffer is no longer a no-op in all
configurations. It doesn't make any difference in practice
for these tests, but for completeness we should call up.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=150056224

playbacktests/src/main/java/com/google/android/exoplayer2/playbacktests/util/DebugSimpleExoPlayer.java

@@ -99,12 +99,14 @@ public class DebugSimpleExoPlayer extends SimpleExoPlayer {
 
     @Override
     protected void onQueueInputBuffer(DecoderInputBuffer buffer) {
+      super.onQueueInputBuffer(buffer);
       insertTimestamp(buffer.timeUs);
       maybeShiftTimestampsList();
     }
 
     @Override
     protected void onProcessedOutputBuffer(long presentationTimeUs) {
+      super.onProcessedOutputBuffer(presentationTimeUs);
       bufferCount++;
       long expectedTimestampUs = dequeueTimestamp();
       if (expectedTimestampUs != presentationTimeUs) {