Hide VM-only coreimpl List implementation types. These should not be

runtime/vm/symbols.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_SYMBOLS_H_
 #define VM_SYMBOLS_H_
 
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 
@@ skipping 83 matching lines @@
   V(LanguageError, "LanguageError")                                            \
   V(UnhandledException, "UnhandledException")                                  \
   V(UnwindError, "UnwindError")                                                \
   V(IntegerImplementation, "_IntegerImplementation")                           \
   V(Number, "num")                                                             \
   V(Smi, "_Smi")                                                               \
   V(Mint, "_Mint")                                                             \
   V(Bigint, "_Bigint")                                                         \
   V(Double, "_Double")                                                         \
   V(Bool, "bool")                                                              \
-  V(ObjectArray, "ObjectArray")                                                \
-  V(GrowableObjectArray, "GrowableObjectArray")                                \
-  V(ImmutableArray, "ImmutableArray")                                          \
+  V(ObjectArray, "_ObjectArray")                                               \
+  V(GrowableObjectArray, "_GrowableObjectArray")                               \
+  V(ImmutableArray, "_ImmutableArray")                                         \
   V(OneByteString, "OneByteString")                                            \
   V(TwoByteString, "TwoByteString")                                            \
   V(FourByteString, "FourByteString")                                          \
   V(ExternalOneByteString, "ExternalOneByteString")                            \
   V(ExternalTwoByteString, "ExternalTwoByteString")                            \
   V(ExternalFourByteString, "ExternalFourByteString")                          \
   V(Stacktrace, "Stacktrace")                                                  \
   V(JSSyntaxRegExp, "JSSyntaxRegExp")                                          \
   V(Object, "Object")                                                          \
   V(_Int8Array, "_Int8Array")                                                  \
@@ skipping 104 matching lines @@
   friend class SnapshotReader;
   friend class SnapshotWriter;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // VM_SYMBOLS_H_