Bug 1219805 - Make coarse type break objects down by [[class]] rather than allocation stack; r=jsantell

devtools/client/memory/constants.js

@@ -51,7 +51,7 @@ const breakdowns = exports.breakdowns = {
     displayName: "Coarse Type",
     breakdown: {
       by: "coarseType",
-      objects: ALLOCATION_STACK,
+      objects: OBJECT_CLASS,
       strings: COUNT,
       scripts: INTERNAL_TYPE,
       other: INTERNAL_TYPE,