Fix equality of implicit closures in the Dart 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 VM_SYMBOLS_H_
 #define VM_SYMBOLS_H_
 
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 
 namespace dart {
 
 // Forward declarations.
 class Isolate;
 class ObjectPointerVisitor;
 
 #define PREDEFINED_SYMBOLS_LIST(V)                                             \
   V(Empty, "")                                                                 \
   V(EqualOperator, "==")                                                       \
+  V(HashCode, "get:hashCode")                                                  \
   V(Identical, "identical")                                                    \
   V(Length, "length")                                                          \
   V(IndexToken, "[]")                                                          \
   V(AssignIndexToken, "[]=")                                                   \
   V(TopLevel, "::")                                                            \
   V(DefaultLabel, ":L")                                                        \
   V(This, "this")                                                              \
   V(Super, "super")                                                            \
   V(Call, "call")                                                              \
   V(Current, "current")                                                        \
@@ skipping 24 matching lines @@
   V(NoSuchMethod, "noSuchMethod")                                              \
   V(SavedCurrentContextVar, ":saved_current_context_var")                      \
   V(SavedEntryContextVar, ":saved_entry_context_var")                          \
   V(SavedTryContextVar, ":saved_try_context_var")                              \
   V(ExceptionVar, ":exception_var")                                            \
   V(StacktraceVar, ":stacktrace_var")                                          \
   V(ListLiteralElement, "list literal element")                                \
   V(ForInIter, ":for-in-iter")                                                 \
   V(ClosureFunctionField, ":function")                                         \
   V(ClosureContextField, ":context")                                           \
+  V(ClosureCompareFunction, "_Closure_comparison")                             \
+  V(ClosureHashCodeFunction, "_Closure_hashCode")                              \
   V(Library, "library")                                                        \
   V(Import, "import")                                                          \
   V(Source, "source")                                                          \
   V(Class, "Class")                                                            \
   V(Null, "Null")                                                              \
   V(Dynamic, "dynamic")                                                        \
   V(Void, "void")                                                              \
   V(UnresolvedClass, "UnresolvedClass")                                        \
   V(Type, "_Type")                                                             \
   V(TypeParameter, "_TypeParameter")                                           \
@@ skipping 406 matching lines @@
   friend class SnapshotReader;
   friend class SnapshotWriter;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // VM_SYMBOLS_H_