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

src/heap/mark-compact.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/mark-compact.h"
 
 #include "src/base/atomicops.h"
 #include "src/base/bits.h"
 #include "src/base/sys-info.h"
 #include "src/code-stubs.h"
@@ skipping 3068 matching lines @@
   // evacuation.
   static int PageEvacuationThreshold() {
     if (FLAG_page_promotion)
       return FLAG_page_promotion_threshold * Page::kAllocatableMemory / 100;
     return Page::kAllocatableMemory + kPointerSize;
   }
 
   explicit Evacuator(MarkCompactCollector* collector)
       : collector_(collector),
         compaction_spaces_(collector->heap()),
-        local_pretenuring_feedback_(base::HashMap::PointersMatch,
-                                    kInitialLocalPretenuringFeedbackCapacity),
+        local_pretenuring_feedback_(kInitialLocalPretenuringFeedbackCapacity),
         new_space_visitor_(collector->heap(), &compaction_spaces_,
                            &local_pretenuring_feedback_),
         new_space_page_visitor(collector->heap()),
         old_space_visitor_(collector->heap(), &compaction_spaces_),
         duration_(0.0),
         bytes_compacted_(0) {}
 
   inline bool EvacuatePage(Page* chunk);
 
   // Merge back locally cached info sequentially. Note that this method needs
@@ skipping 941 matching lines @@
       // The target is always in old space, we don't have to record the slot in
       // the old-to-new remembered set.
       DCHECK(!heap()->InNewSpace(target));
       RecordRelocSlot(host, &rinfo, target);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8