Revert of Rename Heap to ThreadHeap

third_party/WebKit/Source/platform/heap/HeapPage.h

 /*
  * 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 67 matching lines @@
 const size_t largeObjectSizeThreshold = blinkPageSize / 2;
 
 // A zap value used for freed memory that is allowed to be added to the free
 // list in the next addToFreeList().
 const uint8_t reuseAllowedZapValue = 0x2a;
 // A zap value used for freed memory that is forbidden to be added to the free
 // list in the next addToFreeList().
 const uint8_t reuseForbiddenZapValue = 0x2c;
 
 // In non-production builds, memory is zapped when it's freed. The zapped
-// memory is zeroed out when the memory is reused in ThreadHeap::allocateObject().
+// memory is zeroed out when the memory is reused in Heap::allocateObject().
 // In production builds, memory is not zapped (for performance). The memory
 // is just zeroed out when it is added to the free list.
 #if defined(MEMORY_SANITIZER)
 // TODO(kojii): We actually need __msan_poison/unpoison here, but it'll be
 // added later.
 #define SET_MEMORY_INACCESSIBLE(address, size) \
     FreeList::zapFreedMemory(address, size);
 #define SET_MEMORY_ACCESSIBLE(address, size) \
     memset((address), 0, (size))
 #define CHECK_MEMORY_INACCESSIBLE(address, size) \
@@ skipping 787 matching lines @@
         SET_MEMORY_ACCESSIBLE(result, allocationSize - sizeof(HeapObjectHeader));
         ASSERT(findPageFromAddress(headerAddress + allocationSize - 1));
         return result;
     }
     return outOfLineAllocate(allocationSize, gcInfoIndex);
 }
 
 } // namespace blink
 
 #endif // HeapPage_h