Store the RegExp and the string specialization cid in an Array in RawFunction::data_.

runtime/vm/raw_object_snapshot.cc

Index: runtime/vm/raw_object_snapshot.cc
diff --git a/runtime/vm/raw_object_snapshot.cc b/runtime/vm/raw_object_snapshot.cc
index 0cff97ae8bf3ad8655741d355a685a156a283dd2..22267285c4d5958e34de6f06f19e00895f7a0933 100644
--- a/runtime/vm/raw_object_snapshot.cc
+++ b/runtime/vm/raw_object_snapshot.cc
@@ -685,7 +685,6 @@ RawFunction* Function::ReadFrom(SnapshotReader* reader,
   func.set_num_fixed_parameters(reader->Read<int16_t>());
   func.set_num_optional_parameters(reader->Read<int16_t>());
   func.set_deoptimization_counter(reader->Read<int16_t>());
-  func.set_regexp_cid(reader->ReadClassIDValue());
   func.set_kind_tag(reader->Read<uint32_t>());
   func.set_optimized_instruction_count(reader->Read<uint16_t>());
   func.set_optimized_call_site_count(reader->Read<uint16_t>());
@@ -729,7 +728,6 @@ void RawFunction::WriteTo(SnapshotWriter* writer,
   writer->Write<int16_t>(ptr()->num_fixed_parameters_);
   writer->Write<int16_t>(ptr()->num_optional_parameters_);
   writer->Write<int16_t>(ptr()->deoptimization_counter_);
-  writer->WriteClassIDValue(ptr()->regexp_cid_);
   writer->Write<uint32_t>(ptr()->kind_tag_);
   writer->Write<uint16_t>(ptr()->optimized_instruction_count_);
   writer->Write<uint16_t>(ptr()->optimized_call_site_count_);