hg: jdk/sandbox: 8212931: HeapMonitorStatIntervalTest.java fails due average calculation

[chris.hegarty at oracle.com]

Changeset: 3cda8fed1524
Author:    jcbeyler
Date:      2018-11-16 19:27 -0800
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/3cda8fed1524

8212931: HeapMonitorStatIntervalTest.java fails due average calculation
Summary: Added a method to get the actual size
Reviewed-by: amenkov, sspitsyn

! test/hotspot/jtreg/serviceability/jvmti/HeapMonitor/MyPackage/HeapMonitor.java
! test/hotspot/jtreg/serviceability/jvmti/HeapMonitor/MyPackage/HeapMonitorStatIntervalTest.java
! test/hotspot/jtreg/serviceability/jvmti/HeapMonitor/libHeapMonitorTest.c