Add optional message argument to assert statements in the VM.

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 RUNTIME_VM_SYMBOLS_H_
 #define RUNTIME_VM_SYMBOLS_H_
 
 #include "vm/growable_array.h"
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
@@ skipping 58 matching lines @@
   V(CastError, "_CastError")                                                   \
   V(TypeError, "_TypeError")                                                   \
   V(FallThroughError, "FallThroughError")                                      \
   V(AbstractClassInstantiationError, "AbstractClassInstantiationError")        \
   V(NoSuchMethodError, "NoSuchMethodError")                                    \
   V(CyclicInitializationError, "CyclicInitializationError")                    \
   V(_CompileTimeError, "_CompileTimeError")                                    \
   V(ThrowNew, "_throwNew")                                                     \
   V(ThrowNewIfNotLoaded, "_throwNewIfNotLoaded")                               \
   V(CheckAssertion, "_checkAssertion")                                         \
-  V(CheckConstAssertion, "_checkConstAssertion")                               \
   V(Symbol, "Symbol")                                                          \
   V(SymbolCtor, "Symbol.")                                                     \
   V(List, "List")                                                              \
   V(ListLiteralFactory, "List._fromLiteral")                                   \
   V(ListFactory, "List.")                                                      \
   V(Map, "Map")                                                                \
   V(MapLiteralFactory, "Map._fromLiteral")                                     \
   V(ImmutableMap, "ImmutableMap")                                              \
   V(ImmutableMapConstructor, "ImmutableMap._create")                           \
   V(StringBase, "_StringBase")                                                 \
@@ skipping 575 matching lines @@
   friend class Serializer;
   friend class Deserializer;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_SYMBOLS_H_