[serializer] change internal field callbacks to take data pointer.

src/snapshot/partial-serializer.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/snapshot/partial-serializer.h"
 #include "src/snapshot/startup-serializer.h"
 
 #include "src/objects-inl.h"
 
 namespace v8 {
@@ skipping 85 matching lines @@
     LiteralsArray* literals = function->literals();
     for (int i = 0; i < literals->literals_count(); i++) {
       literals->set_literal_undefined(i);
     }
     function->ClearTypeFeedbackInfo();
   }
 
   if (obj->IsJSObject()) {
     JSObject* jsobj = JSObject::cast(obj);
     if (jsobj->GetInternalFieldCount() > 0) {
-      DCHECK_NOT_NULL(serialize_internal_fields_);
+      DCHECK_NOT_NULL(serialize_internal_fields_.callback);
       internal_field_holders_.Add(jsobj);
     }
   }
 
   // Object has not yet been serialized.  Serialize it here.
   ObjectSerializer serializer(this, obj, &sink_, how_to_code, where_to_point);
   serializer.Serialize();
 }
 
 bool PartialSerializer::ShouldBeInThePartialSnapshotCache(HeapObject* o) {
   // Scripts should be referred only through shared function infos.  We can't
   // allow them to be part of the partial snapshot because they contain a
   // unique ID, and deserializing several partial snapshots containing script
   // would cause dupes.
   DCHECK(!o->IsScript());
   return o->IsName() || o->IsSharedFunctionInfo() || o->IsHeapNumber() ||
          o->IsCode() || o->IsScopeInfo() || o->IsAccessorInfo() ||
          o->IsTemplateInfo() ||
          o->map() ==
              startup_serializer_->isolate()->heap()->fixed_cow_array_map();
 }
 
 void PartialSerializer::SerializeInternalFields() {
   int count = internal_field_holders_.length();
   if (count == 0) return;
   DisallowHeapAllocation no_gc;
   DisallowJavascriptExecution no_js(isolate());
   DisallowCompilation no_compile(isolate());
-  DCHECK_NOT_NULL(serialize_internal_fields_);
+  DCHECK_NOT_NULL(serialize_internal_fields_.callback);
   sink_.Put(kInternalFieldsData, "internal fields data");
   while (internal_field_holders_.length() > 0) {
     HandleScope scope(isolate());
     Handle<JSObject> obj(internal_field_holders_.RemoveLast(), isolate());
     SerializerReference reference = reference_map_.Lookup(*obj);
     DCHECK(reference.is_back_reference());
     int internal_fields_count = obj->GetInternalFieldCount();
     for (int i = 0; i < internal_fields_count; i++) {
       if (obj->GetInternalField(i)->IsHeapObject()) continue;
-      StartupData data = serialize_internal_fields_(v8::Utils::ToLocal(obj), i);
+      StartupData data = serialize_internal_fields_.callback(
+          v8::Utils::ToLocal(obj), i, serialize_internal_fields_.data);
       sink_.Put(kNewObject + reference.space(), "internal field holder");
       PutBackReference(*obj, reference);
       sink_.PutInt(i, "internal field index");
       sink_.PutInt(data.raw_size, "internal fields data size");
       sink_.PutRaw(reinterpret_cast<const byte*>(data.data), data.raw_size,
                    "internal fields data");
       delete[] data.data;
     }
   }
   sink_.Put(kSynchronize, "Finished with internal fields data");
 }
 
 }  // namespace internal
 }  // namespace v8