[heap] Cleanup: Remove WAS_SWEPT flag.

src/heap/mark-compact.h

 // 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.
 
 #ifndef V8_HEAP_MARK_COMPACT_H_
 #define V8_HEAP_MARK_COMPACT_H_
 
 #include "src/base/bits.h"
 #include "src/heap/spaces.h"
 
@@ skipping 731 matching lines @@
   void ReleaseEvacuationCandidates();
 
   // Starts sweeping of a space by contributing on the main thread and setting
   // up other pages for sweeping.
   void StartSweepSpace(PagedSpace* space);
 
   // Finalizes the parallel sweeping phase. Marks all the pages that were
   // swept in parallel.
   void ParallelSweepSpacesComplete();
 
-  void ParallelSweepSpaceComplete(PagedSpace* space);
-
   // Updates store buffer and slot buffer for a pointer in a migrating object.
   void RecordMigratedSlot(Object* value, Address slot,
                           SlotsBuffer** evacuation_slots_buffer);
 
   // Adds the code entry slot to the slots buffer.
   void RecordMigratedCodeEntrySlot(Address code_entry, Address code_entry_slot,
                                    SlotsBuffer** evacuation_slots_buffer);
 
   // Adds the slot of a moved code object.
   void RecordMigratedCodeObjectSlot(Address code_object,
@@ skipping 136 matching lines @@
  private:
   MarkCompactCollector* collector_;
 };
 
 
 const char* AllocationSpaceName(AllocationSpace space);
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_MARK_COMPACT_H_