Oilpan: fix building with blink_gc_profiling:1

Source/platform/heap/HeapPage.cpp

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 83 matching lines @@
 #define ASAN_RETIRE_CONTAINER_ANNOTATION(payload, payloadSize)
 #define ASAN_MARK_LARGE_VECTOR_CONTAINER(heap, largeObject)
 #endif
 
 namespace blink {
 
 #if ENABLE(GC_PROFILING)
 static String classOf(const void* object)
 {
     if (const GCInfo* gcInfo = Heap::findGCInfo(reinterpret_cast<Address>(const_cast<void*>(object))))
-        return gcInfo->m_className;
+        return gcInfo->className();
     return "unknown";
 }
 #endif
 
 #if ENABLE(ASSERT)
 NO_SANITIZE_ADDRESS
 void HeapObjectHeader::zapMagic()
 {
     ASSERT(checkHeader());
     m_magic = zappedMagic;
@@ skipping 1703 matching lines @@
 
     m_hasEntries = true;
     size_t index = hash(address);
     ASSERT(!(index & 1));
     Address cachePage = roundToBlinkPageStart(address);
     m_entries[index + 1] = m_entries[index];
     m_entries[index] = cachePage;
 }
 
 } // namespace blink