Revert of [heap] Reland decrease large object limit for regular heap objects.

test/cctest/test-serialize.cc

 // Copyright 2007-2010 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 1205 matching lines @@
           ->Int32Value(v8::Isolate::GetCurrent()->GetCurrentContext());
   CHECK_EQ(600000 + 700000, result.FromJust());
   result = CompileRun("(b + c).length")
                ->Int32Value(v8::Isolate::GetCurrent()->GetCurrentContext());
   CHECK_EQ(500000 + 600000, result.FromJust());
   Heap* heap = isolate->heap();
   v8::Local<v8::String> result_str =
       CompileRun("a")
           ->ToString(CcTest::isolate()->GetCurrentContext())
           .ToLocalChecked();
-  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
+  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
   result_str = CompileRun("b")
                    ->ToString(CcTest::isolate()->GetCurrentContext())
                    .ToLocalChecked();
-  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
+  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
   result_str = CompileRun("c")
                    ->ToString(CcTest::isolate()->GetCurrentContext())
                    .ToLocalChecked();
-  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), LO_SPACE));
+  CHECK(heap->InSpace(*v8::Utils::OpenHandle(*result_str), OLD_SPACE));
 
   delete cache;
   source_a.Dispose();
   source_b.Dispose();
   source_c.Dispose();
 }
 
 
 class SerializerOneByteResource
     : public v8::String::ExternalOneByteStringResource {
@@ skipping 533 matching lines @@
   delete script_data;
 }
 
 
 TEST(SerializationMemoryStats) {
   FLAG_profile_deserialization = true;
   FLAG_always_opt = false;
   v8::StartupData blob = v8::V8::CreateSnapshotDataBlob();
   delete[] blob.data;
 }