Fix StringBase_createFromCodePoints to correctly accept Latin-1 characters

vm/dart_api_impl.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.
 
 #include "include/dart_api.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart.h"
@@ skipping 1599 matching lines @@
     RETURN_TYPE_ERROR(Isolate::Current(), object, String);
   } else {
     return
         Api::NewError(
             "%s expects argument 'object' to be an external String.",
             CURRENT_FUNC);
   }
 }
 
 
-DART_EXPORT Dart_Handle Dart_NewExternalUTF8String(const uint8_t* utf8_array,
-                                                   intptr_t length,
-                                                   void* peer,
-                                                   Dart_PeerFinalizer cback) {
+DART_EXPORT Dart_Handle Dart_NewExternalLatin1String(
+    const uint8_t* latin1_array,
+    intptr_t length,
+    void* peer,
+    Dart_PeerFinalizer cback) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
-  if (utf8_array == NULL && length != 0) {
-    RETURN_NULL_ERROR(utf8_array);
+  if (latin1_array == NULL && length != 0) {
+    RETURN_NULL_ERROR(latin1_array);
   }
   CHECK_LENGTH(length, String::kMaxElements);
   return Api::NewHandle(isolate,
-                        String::NewExternal(utf8_array, length, peer, cback));
+                        String::NewExternal(latin1_array, length, peer, cback));
 }
 
 
 DART_EXPORT Dart_Handle Dart_NewExternalUTF16String(const uint16_t* utf16_array,
                                                     intptr_t length,
                                                     void* peer,
                                                     Dart_PeerFinalizer cback) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   if (utf16_array == NULL && length != 0) {
@@ skipping 2809 matching lines @@
   }
   {
     NoGCScope no_gc;
     RawObject* raw_obj = obj.raw();
     isolate->heap()->SetPeer(raw_obj, peer);
   }
   return Api::Success(isolate);
 }
 
 }  // namespace dart