Hide internal classes from Memory Profile

runtime/observatory/lib/src/service/object.dart

Index: runtime/observatory/lib/src/service/object.dart
diff --git a/runtime/observatory/lib/src/service/object.dart b/runtime/observatory/lib/src/service/object.dart
index ef9499cd4cf68d8b33a14e5ebf7ce4d2c65ec7ef..7b1133bbfc57cdb6032dfa92c37f68badf624753 100644
--- a/runtime/observatory/lib/src/service/object.dart
+++ b/runtime/observatory/lib/src/service/object.dart
@@ -2486,6 +2486,14 @@ class Allocations implements M.Allocations {
     current.bytes = stats[LIVE_AFTER_GC_SIZE] + stats[ALLOCATED_SINCE_GC_SIZE];
   }
 
+  void combine(Iterable<Allocations> allocations) {
+    accumulated.instances =
+        allocations.fold(0, (v, a) => v + a.accumulated.instances);
+    accumulated.bytes = allocations.fold(0, (v, a) => v + a.accumulated.bytes);
+    current.instances = allocations.fold(0, (v, a) => v + a.current.instances);
+    current.bytes = allocations.fold(0, (v, a) => v + a.current.bytes);
+  }
+
   bool get empty => accumulated.empty && current.empty;
   bool get notEmpty => accumulated.notEmpty || current.notEmpty;
 }