Encode any deoptimizer entry in serialized data.

src/snapshot/deserializer.h

Index: src/snapshot/deserializer.h
diff --git a/src/snapshot/deserializer.h b/src/snapshot/deserializer.h
index 76259a80cda5e2c0c2a7769a154630e991e31876..d98798399a7b918466c05b1387fed84e97542c4a 100644
--- a/src/snapshot/deserializer.h
+++ b/src/snapshot/deserializer.h
@@ -5,6 +5,7 @@
 #ifndef V8_SNAPSHOT_DESERIALIZER_H_
 #define V8_SNAPSHOT_DESERIALIZER_H_
 
+#include "src/deoptimizer.h"
 #include "src/heap/heap.h"
 #include "src/objects.h"
 #include "src/snapshot/serializer-common.h"
@@ -41,6 +42,7 @@ class Deserializer : public SerializerDeserializer {
         deserializing_user_code_(deserializing_user_code),
         next_alignment_(kWordAligned) {
     DecodeReservation(data->Reservations());
+    memset(max_deopt_entry_ids_, 0, sizeof(max_deopt_entry_ids_));
   }
 
   ~Deserializer() override;
@@ -62,7 +64,12 @@ class Deserializer : public SerializerDeserializer {
     attached_objects_.Add(attached_object);
   }
 
+  int max_deopt_entry_id(Deoptimizer::BailoutType bailout_type) const {
+    return max_deopt_entry_ids_[bailout_type];
+  }
+
  private:
+  Address DecodeExternalReference(uint32_t reference_id);
   void VisitPointers(Object** start, Object** end) override;
 
   void Synchronize(VisitorSynchronization::SyncTag tag) override;
@@ -151,6 +158,7 @@ class Deserializer : public SerializerDeserializer {
   bool deserializing_user_code_;
 
   AllocationAlignment next_alignment_;
+  int max_deopt_entry_ids_[Deoptimizer::kLastBailoutType + 1];
 
   DISALLOW_COPY_AND_ASSIGN(Deserializer);
 };