Fix TimeStats layerName for transactions

Due to a human error, layer name for transactions was being assigned
the default game mode.

Bug: 191166065
Test: libsurfaceflinger_unittest
Change-Id: I1c0e1b86c9157cb5b99c737554218477860513a6
diff --git a/services/surfaceflinger/TimeStats/TimeStats.cpp b/services/surfaceflinger/TimeStats/TimeStats.cpp
index f1b153f..7c1f21f 100644
--- a/services/surfaceflinger/TimeStats/TimeStats.cpp
+++ b/services/surfaceflinger/TimeStats/TimeStats.cpp
@@ -846,8 +846,8 @@
         timelineStats.stats[layerKey].displayRefreshRateBucket = refreshRateBucket;
         timelineStats.stats[layerKey].renderRateBucket = renderRateBucket;
         timelineStats.stats[layerKey].uid = info.uid;
-        timelineStats.stats[layerKey].layerName = kDefaultGameMode;
-        timelineStats.stats[layerKey].gameMode = info.gameMode;
+        timelineStats.stats[layerKey].layerName = kDefaultLayerName;
+        timelineStats.stats[layerKey].gameMode = kDefaultGameMode;
     }
 
     TimeStatsHelper::TimeStatsLayer& timeStatsLayer = timelineStats.stats[layerKey];