- Represent strings internally in UTF-16 format, this makes it

runtime/bin/gen_snapshot.cc

 // 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.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ skipping 135 matching lines @@
   delete file;
 }
 
 
 static Dart_Handle CreateSnapshotLibraryTagHandler(Dart_LibraryTag tag,
                                                    Dart_Handle library,
                                                    Dart_Handle url) {
   if (!Dart_IsLibrary(library)) {
     return Dart_Error("not a library");
   }
-  if (!Dart_IsString8(url)) {
+  if (!Dart_IsString(url)) {
     return Dart_Error("url is not a string");
   }
   const char* url_string = NULL;
   Dart_Handle result = Dart_StringToCString(url, &url_string);
   if (Dart_IsError(result)) {
     return result;
   }
 
   // If the URL starts with "dart:" then it is handled specially.
   bool is_dart_scheme_url = DartUtils::IsDartSchemeURL(url_string);
   if (tag == kCanonicalizeUrl) {
     if (is_dart_scheme_url) {
       return url;
     }
     return DartUtils::CanonicalizeURL(url_mapping, library, url_string);
   }
   return DartUtils::LoadSource(url_mapping,
                                library,
                                url,
                                tag,
                                url_string);
 }
 
 
 static Dart_Handle LoadSnapshotCreationScript(const char* script_name) {
   Dart_Handle source = DartUtils::ReadStringFromFile(script_name);
   if (Dart_IsError(source)) {
     return source;  // source contains the error string.
   }
-  Dart_Handle url = Dart_NewString(script_name);
+  Dart_Handle url = DartUtils::NewString(script_name);
 
   return Dart_LoadScript(url, source);
 }
 
 
 static Dart_Handle LoadGenericSnapshotCreationScript(
     Builtin::BuiltinLibraryId id) {
   Dart_Handle source = Builtin::Source(id);
   if (Dart_IsError(source)) {
     return source;  // source contains the error string.
@@ skipping 191 matching lines @@
       CreateAndWriteSnapshot(true);
 
       free(snapshot_buffer);
     }
   } else {
     SetupForGenericSnapshotCreation();
     CreateAndWriteSnapshot(false);
   }
   return 0;
 }