Revert "[kernel] Stream everything. Replace .kernel_function with .kernel_offset"

runtime/vm/raw_object_snapshot.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ skipping 739 matching lines @@
     const int32_t end_token_pos = reader->Read<uint32_t>();
     func.set_num_fixed_parameters(reader->Read<int16_t>());
     func.set_num_optional_parameters(reader->Read<int16_t>());
     func.set_kind_tag(reader->Read<uint32_t>());
     func.set_token_pos(TokenPosition::SnapshotDecode(token_pos));
     func.set_end_token_pos(TokenPosition::SnapshotDecode(end_token_pos));
     func.set_usage_counter(reader->Read<int32_t>());
     func.set_deoptimization_counter(reader->Read<int8_t>());
     func.set_optimized_instruction_count(reader->Read<uint16_t>());
     func.set_optimized_call_site_count(reader->Read<uint16_t>());
-    func.set_kernel_offset(0);
+    func.set_kernel_function(NULL);
     func.set_was_compiled(false);
 
     // Set all the object fields.
     READ_OBJECT_FIELDS(func, func.raw()->from(), func.raw()->to_snapshot(),
                        kAsReference);
     // Initialize all fields that are not part of the snapshot.
     bool is_optimized = func.usage_counter() != 0;
     if (is_optimized) {
       // Read the ic data array as the function is an optimized one.
       (*reader->ArrayHandle()) ^= reader->ReadObjectImpl(kAsReference);
@@ skipping 85 matching lines @@
 
   // Allocate field object.
   Field& field = Field::ZoneHandle(reader->zone(), Field::New());
   reader->AddBackRef(object_id, &field, kIsDeserialized);
 
   // Set all non object fields.
   field.set_token_pos(TokenPosition::SnapshotDecode(reader->Read<int32_t>()));
   field.set_guarded_cid(reader->Read<int32_t>());
   field.set_is_nullable(reader->Read<int32_t>());
   field.set_kind_bits(reader->Read<uint8_t>());
-  field.set_kernel_offset(0);
+  field.set_kernel_field(NULL);
 
   // Set all the object fields.
   READ_OBJECT_FIELDS(field, field.raw()->from(), field.raw()->to_snapshot(kind),
                      kAsReference);
   field.StorePointer(&field.raw_ptr()->dependent_code_, Array::null());
 
   if (!reader->isolate()->use_field_guards()) {
     field.set_guarded_cid(kDynamicCid);
     field.set_is_nullable(true);
     field.set_guarded_list_length(Field::kNoFixedLength);
@@ skipping 2186 matching lines @@
     // We do not allow objects with native fields in an isolate message.
     writer->SetWriteException(Exceptions::kArgument,
                               "Illegal argument in isolate message"
                               " : (object is a UserTag)");
   } else {
     UNREACHABLE();
   }
 }
 
 }  // namespace dart