Preparation for moving reusable handles to thread and more cleanups: isolate -> thread based handle…

runtime/vm/precompiler.cc

Index: runtime/vm/precompiler.cc
diff --git a/runtime/vm/precompiler.cc b/runtime/vm/precompiler.cc
index d6a654060cd7262eaa7b23923a0ea80014caf57b..f7297646dcdfc6aef9906e4c33dd10b1e7098031 100644
--- a/runtime/vm/precompiler.cc
+++ b/runtime/vm/precompiler.cc
@@ -106,7 +106,7 @@ void Precompiler::ClearAllCode() {
     ClassDictionaryIterator it(lib, ClassDictionaryIterator::kIteratePrivate);
     while (it.HasNext()) {
       cls = it.GetNextClass();
-      error_ = cls.EnsureIsFinalized(I);
+      error_ = cls.EnsureIsFinalized(thread_);
       if (!error_.IsNull()) {
         Jump(error_);
       }