[heap] Fix computation of flags offset in memorychunk

src/heap/incremental-marking.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/incremental-marking.h"
 
 #include "src/code-stubs.h"
 #include "src/compilation-cache.h"
 #include "src/conversions.h"
 #include "src/heap/gc-idle-time-handler.h"
@@ skipping 1092 matching lines @@
         PrintIsolate(heap()->isolate(), "Marking speed increased to %d\n",
                      marking_speed_);
       }
     }
   }
 }
 
 void IncrementalMarking::FinalizeSweeping() {
   DCHECK(state_ == SWEEPING);
   if (heap_->mark_compact_collector()->sweeping_in_progress() &&
-      (heap_->mark_compact_collector()->IsSweepingCompleted() ||
+      (heap_->mark_compact_collector()->sweeper().IsSweepingCompleted() ||
        !FLAG_concurrent_sweeping)) {
     heap_->mark_compact_collector()->EnsureSweepingCompleted();
   }
   if (!heap_->mark_compact_collector()->sweeping_in_progress()) {
     bytes_scanned_ = 0;
     StartMarking();
   }
 }
 
 intptr_t IncrementalMarking::Step(intptr_t allocated_bytes,
@@ skipping 108 matching lines @@
 void IncrementalMarking::IncrementIdleMarkingDelayCounter() {
   idle_marking_delay_counter_++;
 }
 
 
 void IncrementalMarking::ClearIdleMarkingDelayCounter() {
   idle_marking_delay_counter_ = 0;
 }
 }  // namespace internal
 }  // namespace v8