Enable preaging of code objects when --optimize-for-size.

src/serialize.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 571 matching lines @@
       63,
       "Heap::allocation_sites_list_address()");
   Add(ExternalReference::record_object_allocation_function(isolate).address(),
       UNCLASSIFIED,
       64,
       "HeapProfiler::RecordObjectAllocationFromMasm");
   Add(ExternalReference::address_of_uint32_bias().address(),
       UNCLASSIFIED,
       65,
       "uint32_bias");
+  Add(ExternalReference::get_mark_code_as_executed_function(isolate).address(),
+      UNCLASSIFIED,
+      66,
+      "Code::MarkCodeAsExecuted");
 
   // Add a small set of deopt entry addresses to encoder without generating the
   // deopt table code, which isn't possible at deserialization time.
   HandleScope scope(isolate);
   for (int entry = 0; entry < kDeoptTableSerializeEntryCount; ++entry) {
     Address address = Deoptimizer::GetDeoptimizationEntry(
         isolate,
         entry,
         Deoptimizer::LAZY,
         Deoptimizer::CALCULATE_ENTRY_ADDRESS);
@@ skipping 1270 matching lines @@
 
 bool SnapshotByteSource::AtEOF() {
   if (0u + length_ - position_ > 2 * sizeof(uint32_t)) return false;
   for (int x = position_; x < length_; x++) {
     if (data_[x] != SerializerDeserializer::nop()) return false;
   }
   return true;
 }
 
 } }  // namespace v8::internal