Move all the closure related fields in RawFunction into a new class

vm/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/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
 #include "vm/exceptions.h"
@@ skipping 507 matching lines @@
 RawTypeParameter* SnapshotReader::NewTypeParameter() {
   ALLOC_NEW_OBJECT(TypeParameter, Object::type_parameter_class());
 }
 
 
 RawPatchClass* SnapshotReader::NewPatchClass() {
   ALLOC_NEW_OBJECT(PatchClass, Object::patch_class_class());
 }
 
 
+RawClosureData* SnapshotReader::NewClosureData() {
+  ALLOC_NEW_OBJECT(ClosureData, Object::closure_data_class());
+}
+
+
 RawFunction* SnapshotReader::NewFunction() {
   ALLOC_NEW_OBJECT(Function, Object::function_class());
 }
 
 
 RawField* SnapshotReader::NewField() {
   ALLOC_NEW_OBJECT(Field, Object::field_class());
 }
 
 
@@ skipping 632 matching lines @@
 
 
 void MessageWriter::WriteMessage(const Object& obj) {
   ASSERT(kind() == Snapshot::kMessage);
   WriteObject(obj.raw());
   UnmarkAll();
 }
 
 
 }  // namespace dart