A few simple cleanups.

runtime/vm/dart_entry.cc

 // Copyright (c) 2011, 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/dart_entry.h"
 
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/object_store.h"
 #include "vm/resolver.h"
@@ skipping 158 matching lines @@
 bool ArgumentsDescriptor::MatchesNameAt(intptr_t index,
                                         const String& other) const {
   const intptr_t offset = kFirstNamedEntryIndex +
                           (index * kNamedEntrySize) +
                           kNameOffset;
   return array_.At(offset) == other.raw();
 }
 
 
 intptr_t ArgumentsDescriptor::count_offset() {
-  return Array::data_offset() + (kCountIndex * kWordSize);
+  return Array::element_offset(kCountIndex);
 }
 
 
 intptr_t ArgumentsDescriptor::positional_count_offset() {
-  return Array::data_offset() + (kPositionalCountIndex * kWordSize);
+  return Array::element_offset(kPositionalCountIndex);
 }
 
 
 intptr_t ArgumentsDescriptor::first_named_entry_offset() {
-  return Array::data_offset() + (kFirstNamedEntryIndex * kWordSize);
+  return Array::element_offset(kFirstNamedEntryIndex);
 }
 
 
 RawArray* ArgumentsDescriptor::New(intptr_t num_arguments,
                                    const Array& optional_arguments_names) {
   const intptr_t num_named_args =
       optional_arguments_names.IsNull() ? 0 : optional_arguments_names.Length();
   if (num_named_args == 0) {
     return ArgumentsDescriptor::New(num_arguments);
   }
@@ skipping 275 matching lines @@
           String::Handle(Field::GetterName(Symbols::_id()))));
   const Function& func = Function::Handle(cls.LookupDynamicFunction(func_name));
   ASSERT(!func.IsNull());
   const Array& args = Array::Handle(Array::New(1));
   args.SetAt(0, port);
   return DartEntry::InvokeFunction(func, args);
 }
 
 
 }  // namespace dart