Revert "Reapply "Eliminate dependencies on assemblers and code stubs in precompiled runtime.""

runtime/vm/ast_transformer.cc

Index: runtime/vm/ast_transformer.cc
diff --git a/runtime/vm/ast_transformer.cc b/runtime/vm/ast_transformer.cc
index a050e6cb20bed67f9f01140690f86469d1c79b1a..81304f606bd28b25483d7f9852a8ae39e6d7e598 100644
--- a/runtime/vm/ast_transformer.cc
+++ b/runtime/vm/ast_transformer.cc
@@ -2,8 +2,6 @@
 // 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.
 
-#if !defined(DART_PRECOMPILED_RUNTIME)
-
 #include "vm/ast_transformer.h"
 
 #include "vm/object_store.h"
@@ -497,5 +495,3 @@ void AwaitTransformer::VisitThrowNode(ThrowNode* node) {
 }
 
 }  // namespace dart
-
-#endif  // !defined(DART_PRECOMPILED_RUNTIME)