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

runtime/vm/regexp_assembler_ir.cc

 // Copyright (c) 2014, 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.
 
-#if !defined(DART_PRECOMPILED_RUNTIME)
-
 #include "vm/regexp_assembler_ir.h"
 
 #include "vm/bit_vector.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/il_printer.h"
 #include "vm/object_store.h"
 #include "vm/regexp.h"
 #include "vm/resolver.h"
@@ skipping 1710 matching lines @@
   Value* index_val = BindLoadLocal(*index);
 
   return Bind(new (Z) LoadCodeUnitsInstr(pattern_val, index_val, characters,
                                          specialization_cid_,
                                          TokenPosition::kNoSource));
 }
 
 #undef __
 
 }  // namespace dart
-
-#endif  // !defined(DART_PRECOMPILED_RUNTIME)