Allow assertions to be enabled in Blink Release builds.

Source/wtf/PartitionAlloc.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 834 matching lines @@
         size_t decommitSize = currentSize - newSize;
         partitionDecommitSystemPages(root, charPtr + newSize, decommitSize);
         setSystemPagesInaccessible(charPtr + newSize, decommitSize);
     } else if (newSize <= partitionPageToDirectMapExtent(page)->mapSize) {
         // Grow within the actually allocated memory. Just need to make the
         // pages accessible again.
         size_t recommitSize = newSize - currentSize;
         setSystemPagesAccessible(charPtr + currentSize, recommitSize);
         partitionRecommitSystemPages(root, charPtr + currentSize, recommitSize);
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
         memset(charPtr + currentSize, kUninitializedByte, recommitSize);
 #endif
     } else {
         // We can't perform the realloc in-place.
         // TODO: support this too when possible.
         return false;
     }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     // Write a new trailing cookie.
     partitionCookieWriteValue(charPtr + newSize - kCookieSize);
 #endif
 
     page->bucket->slotSize = newSize;
     return true;
 }
 
 void* partitionReallocGeneric(PartitionRootGeneric* root, void* ptr, size_t newSize)
 {
@@ skipping 101 matching lines @@
     printf("total live: %zu bytes\n", totalLive);
     printf("total resident: %zu bytes\n", totalResident);
     printf("total freeable: %zu bytes\n", totalFreeable);
     fflush(stdout);
 }
 
 #endif // !NDEBUG
 
 } // namespace WTF