[TimeStats] clear frame duration and renderengine histograms

Bug: 119885568
Test: adb shell dumpsys SurfaceFlinger --timstats -clear
Change-Id: Id6b5411f1b69fdfef1a8513f64f282fa87e2690a
diff --git a/services/surfaceflinger/TimeStats/TimeStats.cpp b/services/surfaceflinger/TimeStats/TimeStats.cpp
index 1895777..a5fabf2 100644
--- a/services/surfaceflinger/TimeStats/TimeStats.cpp
+++ b/services/surfaceflinger/TimeStats/TimeStats.cpp
@@ -618,6 +618,8 @@
     mTimeStats.clientCompositionFrames = 0;
     mTimeStats.displayOnTime = 0;
     mTimeStats.presentToPresent.hist.clear();
+    mTimeStats.frameDuration.hist.clear();
+    mTimeStats.renderEngineTiming.hist.clear();
     mTimeStats.refreshRateStats.clear();
     mPowerTime.prevTime = systemTime();
     mGlobalRecord.prevPresentTime = 0;