Eliminate dependencies on assemblers and code stubs in precompiled runtime.

runtime/vm/deferred_objects.cc

Index: runtime/vm/deferred_objects.cc
diff --git a/runtime/vm/deferred_objects.cc b/runtime/vm/deferred_objects.cc
index 4e2b3da06421b41689a0466410ac8537e1337104..2c23d6b1e090717c16246c86032ef0d51ea30484 100644
--- a/runtime/vm/deferred_objects.cc
+++ b/runtime/vm/deferred_objects.cc
@@ -2,6 +2,8 @@
 // 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/deferred_objects.h"
 
 #include "vm/code_patcher.h"
@@ -329,3 +331,5 @@ void DeferredObject::Fill() {
 }
 
 }  // namespace dart
+
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)