DWARF and unwind support for AOT assembly output.

runtime/vm/native_symbol_win.cc

 // Copyright (c) 2013, 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(HOST_OS_WINDOWS)
 
 #include "vm/lockers.h"
 #include "vm/native_symbol.h"
 #include "vm/os_thread.h"
@@ skipping 64 matching lines @@
 #endif
   return NULL;
 }
 
 
 void NativeSymbolResolver::FreeSymbolName(char* name) {
   free(name);
 }
 
 
+bool NativeSymbolResolver::LookupSharedObject(uword pc,
+                                              uword* dso_base,
+                                              char** dso_name) {
+  return false;
+}
+
 }  // namespace dart
 
 #endif  // defined(HOST_OS_WINDOWS)