Fixing --verify-predictable mode.

src/heap/spaces.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/heap/spaces.h"
 
 #include "src/base/bits.h"
 #include "src/base/platform/platform.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/heap/slots-buffer.h"
@@ skipping 2392 matching lines @@
 }
 
 
 int FreeList::Free(Address start, int size_in_bytes) {
   if (size_in_bytes == 0) return 0;
 
   owner()->heap()->CreateFillerObjectAt(start, size_in_bytes);
 
   Page* page = Page::FromAddress(start);
 
+  owner()->heap()->OnFreeEvent(start, size_in_bytes);
+
   // Early return to drop too-small blocks on the floor.
   if (size_in_bytes <= kSmallListMin) {
     page->add_non_available_small_blocks(size_in_bytes);
     wasted_bytes_ += size_in_bytes;
     return size_in_bytes;
   }
 
   FreeSpace* free_space = FreeSpace::cast(HeapObject::FromAddress(start));
   // Insert other blocks at the head of a free list of the appropriate
   // magnitude.
@@ skipping 875 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 }  // namespace internal
 }  // namespace v8