Use FormatMessageW for Windows error messages to handle internationalized messages correctly.

runtime/bin/utils_macos.cc

Index: runtime/bin/utils_macos.cc
diff --git a/runtime/bin/utils_macos.cc b/runtime/bin/utils_macos.cc
index ab48f555e9d9856a3b30b993600f6f14f809e857..5661f74d92f67bed92505175e92151f918e37de5 100644
--- a/runtime/bin/utils_macos.cc
+++ b/runtime/bin/utils_macos.cc
@@ -27,18 +27,38 @@ void OSError::SetCodeAndMessage(SubSystem sub_system, int code) {
   }
 }
 
-const char* StringUtils::SystemStringToUtf8(const char* str) {
+const char* StringUtils::ConsoleStringToUtf8(const char* str) {
   return str;
 }
 
-const char* StringUtils::Utf8ToSystemString(const char* utf8) {
+const char* StringUtils::Utf8ToConsoleString(const char* utf8) {
   return utf8;
 }
 
-char* StringUtils::SystemStringToUtf8(char* str) {
+char* StringUtils::ConsoleStringToUtf8(char* str) {
   return str;
 }
 
-char* StringUtils::Utf8ToSystemString(char* utf8) {
+char* StringUtils::Utf8ToConsoleString(char* utf8) {
   return utf8;
 }
+
+wchar_t* StringUtils::Utf8ToWide(char* utf8) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+const wchar_t* StringUtils::Utf8ToWide(const char* utf8) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+char* StringUtils::WideToUtf8(wchar_t* str) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+const char* StringUtils::WideToUtf8(const wchar_t* str) {
+  UNIMPLEMENTED();
+  return NULL;
+}