Working implementation of #29153 range check in as-casts.

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 410 matching lines @@
   V(removeLast, "removeLast")                                                  \
   V(add, "add")                                                                \
   V(ConstructorClosurePrefix, "new#")                                          \
   V(_runExtension, "_runExtension")                                            \
   V(_runPendingImmediateCallback, "_runPendingImmediateCallback")              \
   V(DartLibrary, "dart.library.")                                              \
   V(DartLibraryMirrors, "dart.library.mirrors")                                \
   V(_name, "_name")                                                            \
   V(_classRangeCheck, "_classRangeCheck")                                      \
   V(_classRangeCheckNegative, "_classRangeCheckNegative")                      \
+  V(_classRangeAssert, "_classRangeAssert")                                    \
+  V(_classIdEqualsAssert, "_classIdEqualsAssert")                              \
   V(GetRuntimeType, "get:runtimeType")                                         \
   V(HaveSameRuntimeType, "_haveSameRuntimeType")                               \
   V(DartDeveloperCausalAsyncStacks, "dart.developer.causal_async_stacks")      \
   V(_AsyncStarListenHelper, "_asyncStarListenHelper")
 
 
 // Contains a list of frequently used strings in a canonicalized form. This
 // list is kept in the vm_isolate in order to share the copy across isolates
 // without having to maintain copies in each isolate.
 class Symbols : public AllStatic {
@@ skipping 249 matching lines @@
   friend class Serializer;
   friend class Deserializer;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_SYMBOLS_H_