Remove some uses of STL map.

runtime/vm/object.cc

 // 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.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/become.h"
@@ skipping 21589 matching lines @@
       // May waste some bits on 64-bit, to ensure consistency with non-Smi case.
       return static_cast<uword>(Smi::Cast(hash_code).AsTruncatedUint32Value());
     } else if (hash_code.IsInteger()) {
       return static_cast<uword>(
           Integer::Cast(hash_code).AsTruncatedUint32Value());
     } else {
       return 0;
     }
   }
 };
-typedef EnumIndexHashMap<DefaultHashTraits> EnumIndexDefaultMap;
 
 
 RawLinkedHashMap* LinkedHashMap::NewDefault(Heap::Space space) {
   const Array& data = Array::Handle(Array::New(kInitialIndexSize, space));
   const TypedData& index = TypedData::Handle(TypedData::New(
       kTypedDataUint32ArrayCid, kInitialIndexSize, space));
   // On 32-bit, the top bits are wasted to avoid Mint allocation.
   static const intptr_t kAvailableBits = (kSmiBits >= 32) ? 32 : kSmiBits;
   static const intptr_t kInitialHashMask =
       (1 << (kAvailableBits - kInitialIndexBits)) - 1;
@@ skipping 1047 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart