Expose a lower bound of malloc'd memory via heap statistics

test/cctest/compiler/test-jump-threading.cc

Index: test/cctest/compiler/test-jump-threading.cc
diff --git a/test/cctest/compiler/test-jump-threading.cc b/test/cctest/compiler/test-jump-threading.cc
index 71f774f5621d3b4a02fcecd423159ed7c5cc4f3f..9f8a952c60747d72e10ecd1973dc5899de030ee6 100644
--- a/test/cctest/compiler/test-jump-threading.cc
+++ b/test/cctest/compiler/test-jump-threading.cc
@@ -106,7 +106,7 @@ class TestCode : public HandleAndZoneScope {
 
 
 void VerifyForwarding(TestCode& code, int count, int* expected) {
-  Zone local_zone;
+  ZoneForTesting local_zone;
   ZoneVector<RpoNumber> result(&local_zone);
   JumpThreading::ComputeForwarding(&local_zone, result, &code.sequence_, true);