Use unicode versions of process APIs on Windows. Additionally,

runtime/bin/main.cc

Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index 63d00dc5c9ff1790a536c34237342d2c4ee08ea3..de8aa60d9c406f6bfa28901fa36ff8da566d4895 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -254,17 +254,15 @@ static void CloseFile(void* stream) {
 // Returns true if the arguments are converted. In that case
 // each of the arguments need to be deallocated using free.
 static bool Utf8ConvertArgv(int argc, char** argv) {
-  bool result = false;
-  for (int i = 0; i < argc; i++) {
-    char* arg = argv[i];
-    argv[i] = StringUtils::ConsoleStringToUtf8(arg);
-    if (i == 0) {
-      result = argv[i] != arg;
-    } else {
-      ASSERT(result == (argv[i] != arg));
-    }
-  }
-  return result;
+  int unicode_argc = 0;
+  wchar_t** unicode_argv = ShellUtils::GetUnicodeArgv(&unicode_argc);
+  if (unicode_argv == NULL) return false;
+  for (int i = 0; i < unicode_argc; i++) {
+    wchar_t* arg = unicode_argv[i];
+    argv[i] = StringUtils::WideToUtf8(arg);
+  }
+  ShellUtils::FreeUnicodeArgv(unicode_argv);
+  return true;
 }