Move ApiLocalScope out of class ApiState into class Thread so that the API local handles and zone e…

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index 2be8c9452e0997ad2781b317bf121dbe56c09c9c..4949390b70f3f35385b9d5bf04c426d35df03c11 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -10691,8 +10691,8 @@ bool LibraryPrefix::LoadLibrary() const {
     const String& lib_url = String::Handle(zone, deferred_lib.url());
     Dart_LibraryTagHandler handler = isolate->library_tag_handler();
     handler(Dart_kImportTag,
-            Api::NewHandle(isolate, importer()),
-            Api::NewHandle(isolate, lib_url.raw()));
+            Api::NewHandle(thread, importer()),
+            Api::NewHandle(thread, lib_url.raw()));
   } else {
     // Another load request is in flight.
     ASSERT(deferred_lib.LoadRequested());