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

src/bootstrapper.cc

 // Copyright 2014 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/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/ieee754.h"
 #include "src/code-stubs.h"
@@ skipping 3638 matching lines @@
   WasmJs::Install(isolate, global);
 
   return true;
 }
 
 
 static uint32_t Hash(RegisteredExtension* extension) {
   return v8::internal::ComputePointerHash(extension);
 }
 
-Genesis::ExtensionStates::ExtensionStates()
-    : map_(base::HashMap::PointersMatch, 8) {}
+Genesis::ExtensionStates::ExtensionStates() : map_(8) {}
 
 Genesis::ExtensionTraversalState Genesis::ExtensionStates::get_state(
     RegisteredExtension* extension) {
   base::HashMap::Entry* entry = map_.Lookup(extension, Hash(extension));
   if (entry == NULL) {
     return UNVISITED;
   }
   return static_cast<ExtensionTraversalState>(
       reinterpret_cast<intptr_t>(entry->value));
 }
@@ skipping 531 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8