[oilpan] Make the oilpan branch build on Mac.

Source/heap/Heap.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 933 matching lines @@
         // FIXME(oilpan): finalize objects on the thread that allocated them.
         ThreadState::MainThreadState()->setPendingAction(&Heap::finalizePendingObjects);
 
 #ifndef NDEBUG
         const double endTime = WTF::monotonicallyIncreasingTime();
         if (false) {
             printf("GC ");
             PrintStats(before);
             printf(" => ");
             PrintStats(*s_statsAfterLastGC);
-            printf(" in %.3fs (thread %p)\n", (endTime - startTime), currentThread());
+            printf(" in %.3fs (thread %x)\n", (endTime - startTime), currentThread());
         }
 #endif
     }
 }
 
 void Heap::pushAcceptCallback(void* object, AcceptCallback callback)
 {
     ASSERT(Heap::contains(object));
 #ifndef NDEBUG
     FinalizedHeapObjectHeader::fromPayload(object)->checkHeader();
@@ skipping 75 matching lines @@
 HeapPage* Heap::s_firstPage;
 int Heap::s_biggestFreeListIndex;
 FreeListEntry* Heap::s_freeLists[pageSizeLog2];
 HeapStats* Heap::s_stats;
 HeapStats* Heap::s_statsAfterLastGC;
 bool Heap::s_heapWasInitialized = false;
 CallbackStack* Heap::s_markingStack;
 CallbackStack* Heap::s_weakCallbackStack;
 
 } // namespace WebCore