Change return type of MapSpace::NeedsCompaction from int to bool....

src/spaces.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1760 matching lines @@
       ASSERT(CountTotalPages() <= kMaxMapPageIndex);
       return true;
     }
     int n_of_pages = Capacity() / Page::kObjectAreaSize;
     ASSERT(n_of_pages == CountTotalPages());
     return n_of_pages <= kMaxMapPageIndex;
   }
 
   // Should be called after forced sweep to find out if map space needs
   // compaction.
-  int NeedsCompaction(int live_maps) {
+  bool NeedsCompaction(int live_maps) {
     return !MapPointersEncodable() && live_maps <= kCompactionThreshold;
   }
 
   Address TopAfterCompaction(int live_maps) {
     ASSERT(NeedsCompaction(live_maps));
 
     int pages_left = live_maps / kMapsPerPage;
     PageIterator it(this, PageIterator::ALL_PAGES);
     while (pages_left-- > 0) {
       ASSERT(it.has_next());
@@ skipping 253 matching lines @@
 
  private:
   LargeObjectChunk* current_;
   HeapObjectCallback size_func_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SPACES_H_