Retrieve value of local variables in stack frames.

runtime/vm/debugger_x64.cc

Index: runtime/vm/debugger_x64.cc
===================================================================
--- runtime/vm/debugger_x64.cc	(revision 0)
+++ runtime/vm/debugger_x64.cc	(revision 0)
@@ -0,0 +1,18 @@
+// 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/globals.h"
+#if defined(TARGET_ARCH_X64)
+
+#include "vm/debugger.h"
+
+namespace dart {
+
+RawInstance* ActivationFrame::GetLocalVarValue(intptr_t slot_index) {
+  UNIMPLEMENTED();
+}
+
+}  // namespace dart
+
+#endif  // defined TARGET_ARCH_X64