hg: jdk/submit: 8220747: Migrate data structures to being more C++

[jcbeyler at google.com]

Changeset: 5a166040df8b
Author:    jcbeyler
Date:      2019-03-19 22:05 -0700
URL:       http://hg.openjdk.java.net/jdk/submit/rev/5a166040df8b

8220747: Migrate data structures to being more C++
Summary:
Reviewed-by:

! make/test/JtregNativeHotspot.gmk
! test/hotspot/jtreg/serviceability/jvmti/HeapMonitor/libHeapMonitorTest.cpp