Fix Heap::ComputeHeapState after 057514 and 6256dc.

src/heap/heap.cc

 // Copyright 2012 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/heap.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/bits.h"
 #include "src/base/once.h"
@@ skipping 4071 matching lines @@
   }
   return false;
 }
 
 
 GCIdleTimeHeapState Heap::ComputeHeapState() {
   GCIdleTimeHeapState heap_state;
   heap_state.contexts_disposed = contexts_disposed_;
   heap_state.contexts_disposal_rate =
       tracer()->ContextDisposalRateInMilliseconds();
+  heap_state.size_of_objects = static_cast<size_t>(SizeOfObjects());
   heap_state.incremental_marking_stopped = incremental_marking()->IsStopped();
-  heap_state.mark_compact_speed_in_bytes_per_ms =
-      static_cast<size_t>(tracer()->MarkCompactSpeedInBytesPerMillisecond());
   return heap_state;
 }
 
 
 bool Heap::PerformIdleTimeAction(GCIdleTimeAction action,
                                  GCIdleTimeHeapState heap_state,
                                  double deadline_in_ms) {
   bool result = false;
   switch (action.type) {
     case DONE:
@@ skipping 1992 matching lines @@
 }
 
 
 // static
 int Heap::GetStaticVisitorIdForMap(Map* map) {
   return StaticVisitorBase::GetVisitorId(map);
 }
 
 }  // namespace internal
 }  // namespace v8