Very first steps for a debugger

runtime/vm/code_patcher_x64.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/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/code_patcher.h"
 
 namespace dart {
 
 void CodePatcher::GetStaticCallAt(uword return_address,
                                   Function* function,
                                   uword* target) {
   UNIMPLEMENTED();
 }
 
 
 void CodePatcher::PatchStaticCallAt(uword return_address, uword new_target) {
   UNIMPLEMENTED();
 }
 
 
+void CodePatcher::PatchInstanceCallAt(uword return_address, uword new_target) {
+  UNIMPLEMENTED();
+}
+
+
 bool CodePatcher::IsDartCall(uword return_address) {
   UNIMPLEMENTED();
   return false;
 }
 
 
 void CodePatcher::GetInstanceCallAt(uword return_address,
                                     String* function_name,
                                     int* num_arguments,
                                     int* num_named_arguments,
@@ skipping 25 matching lines @@
 
 
 void CodePatcher::SetInstanceCallIcDataAt(uword return_address,
                                          const Array& ic_data) {
   UNIMPLEMENTED();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64