Improve performance of Dart_ListGetAsBytes.

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/class_finalizer.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/debugger.h"
@@ skipping 14 matching lines @@
   const Array& arguments_descriptor =
       Array::Handle(ArgumentsDescriptor::New(arguments.Length()));
   return InvokeFunction(function, arguments, arguments_descriptor);
 }
 
 
 RawObject* DartEntry::InvokeFunction(const Function& function,
                                      const Array& arguments,
                                      const Array& arguments_descriptor) {
   const Context& context =
-      Context::ZoneHandle(Isolate::Current()->object_store()->empty_context());
+      Context::Handle(Isolate::Current()->object_store()->empty_context());
   ASSERT(context.isolate() == Isolate::Current());
   return InvokeFunction(function, arguments, arguments_descriptor, context);
 }
 
 
 RawObject* DartEntry::InvokeFunction(const Function& function,
                                      const Array& arguments,
                                      const Array& arguments_descriptor,
                                      const Context& context) {
   // Get the entrypoint corresponding to the function specified, this
@@ skipping 510 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