[base] Remove PointersMatch, making a separate std::equals hashmap

src/heap/spaces.cc

 // Copyright 2011 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/spaces.h"
 
 #include <utility>
 
 #include "src/base/bits.h"
 #include "src/base/platform/platform.h"
@@ skipping 2925 matching lines @@
 
 // -----------------------------------------------------------------------------
 // LargeObjectSpace
 
 LargeObjectSpace::LargeObjectSpace(Heap* heap, AllocationSpace id)
     : Space(heap, id, NOT_EXECUTABLE),  // Managed on a per-allocation basis
       first_page_(NULL),
       size_(0),
       page_count_(0),
       objects_size_(0),
-      chunk_map_(base::HashMap::PointersMatch, 1024) {}
+      chunk_map_(1024) {}
 
 LargeObjectSpace::~LargeObjectSpace() {}
 
 
 bool LargeObjectSpace::SetUp() {
   first_page_ = NULL;
   size_ = 0;
   page_count_ = 0;
   objects_size_ = 0;
   chunk_map_.Clear();
@@ skipping 282 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 }  // namespace internal
 }  // namespace v8