Use unicode versions of process APIs on Windows. Additionally,

runtime/bin/utils.h

 // Copyright (c) 2012, 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.
 
 #ifndef BIN_UTILS_H_
 #define BIN_UTILS_H_
 
 #include <stdlib.h>
 #include <string.h>
 
@@ skipping 51 matching lines @@
   static const char* ConsoleStringToUtf8(const char* str);
   static char* ConsoleStringToUtf8(char* str);
   static const char* Utf8ToConsoleString(const char* utf8);
   static char* Utf8ToConsoleString(char* utf8);
   static char* WideToUtf8(wchar_t* wide);
   static const char* WideToUtf8(const wchar_t* wide);
   static wchar_t* Utf8ToWide(char* utf8);
   static const wchar_t* Utf8ToWide(const char* utf8);
 };
 
+class ShellUtils {
+ public:
+  // Get the arguments passed to the program as unicode strings.
+  // If GetUnicodeArgv returns a pointer that pointer has to be
+  // deallocated with a call to FreeUnicodeArgv.
+  static wchar_t** GetUnicodeArgv(int* argc);
+  static void FreeUnicodeArgv(wchar_t** argv);
+};
+
 #endif  // BIN_UTILS_H_