Fixing --verify-predictable mode.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 92f0ded0361bc0fa9e75374b96628e6d08096ba7..98e7ba4307abaa11344ca0240ec51a9983f58b54 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -888,10 +888,6 @@ class Heap {
   // Number of "runtime allocations" done so far.
   uint32_t allocations_count() { return allocations_count_; }
 
-  // Returns deterministic "time" value in ms. Works only with
-  // FLAG_verify_predictable.
-  double synthetic_time() { return allocations_count() / 2.0; }
-
   // Print short heap statistics.
   void PrintShortHeapStatistics();
 
@@ -1008,6 +1004,8 @@ class Heap {
   inline void OnMoveEvent(HeapObject* target, HeapObject* source,
                           int size_in_bytes);
 
+  inline void OnFreeEvent(Address start, int size_in_bytes);
+
   bool deserialization_complete() const { return deserialization_complete_; }
 
   bool HasLowAllocationRate();
@@ -2163,9 +2161,6 @@ class Heap {
   // Running hash over allocations performed.
   uint32_t raw_allocations_hash_;
 
-  // Countdown counter, dumps allocation hash when 0.
-  uint32_t dump_allocations_hash_countdown_;
-
   // How many mark-sweep collections happened.
   unsigned int ms_count_;