Remove some unnecessary class handle creations.

vm/raw_object_snapshot.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/bigint_operations.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
@@ skipping 2084 matching lines @@
     SnapshotReader* reader,                                                    \
     intptr_t object_id,                                                        \
     intptr_t tags,                                                             \
     Snapshot::Kind kind) {                                                     \
   ASSERT(kind != Snapshot::kFull);                                             \
   intptr_t length = reader->ReadSmiValue();                                    \
   type* data = reinterpret_cast<type*>(reader->ReadIntptrValue());             \
   void* peer = reinterpret_cast<void*>(reader->ReadIntptrValue());             \
   Dart_PeerFinalizer callback =                                                \
       reinterpret_cast<Dart_PeerFinalizer>(reader->ReadIntptrValue());         \
-  const Class& cls = Class::Handle(                                            \
-      reader->isolate()->object_store()->external_##lname##_array_class());    \
-  return NewExternalImpl<External##name##Array, RawExternal##name##Array>(     \
-      cls, data, length, peer, callback, HEAP_SPACE(kind));                    \
+  return New(data, length, peer, callback, HEAP_SPACE(kind));                  \
 }                                                                              \
 
 
 BYTEARRAY_TYPE_LIST(EXTERNALARRAY_READ_FROM)
 #undef EXTERNALARRAY_READ_FROM
 
 
 template<typename ElementT>
 static void ByteArrayWriteTo(SnapshotWriter* writer,
                              intptr_t object_id,
@@ skipping 188 matching lines @@
   // Write out the class and tags information.
   writer->WriteIndexedObject(kWeakPropertyCid);
   writer->WriteIntptrValue(writer->GetObjectTags(this));
 
   // Write out all the other fields.
   writer->Write<RawObject*>(ptr()->key_);
   writer->Write<RawObject*>(ptr()->value_);
 }
 
 }  // namespace dart