Seperate LatencyStatistics from InputReader

Test: atest LatencyStatisticsTest
Change-Id: I22a39cd5bef7fa9180bc1ee1fd9478a2cf872e83
diff --git a/libs/input/tests/Android.bp b/libs/input/tests/Android.bp
index ade931e..c1c35e1 100644
--- a/libs/input/tests/Android.bp
+++ b/libs/input/tests/Android.bp
@@ -7,6 +7,7 @@
         "InputEvent_test.cpp",
         "InputPublisherAndConsumer_test.cpp",
         "InputWindow_test.cpp",
+        "LatencyStatistics_test.cpp",
         "TouchVideoFrame_test.cpp",
         "VelocityTracker_test.cpp",
     ],