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

src/asmjs/asm-typer.cc

 // Copyright 2016 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/asmjs/asm-typer.h"
 
 #include <algorithm>
 #include <limits>
 #include <memory>
 #include <string>
@@ skipping 113 matching lines @@
 AsmTyper::AsmTyper(Isolate* isolate, Zone* zone, Script* script,
                    FunctionLiteral* root)
     : isolate_(isolate),
       zone_(zone),
       script_(script),
       root_(root),
       forward_definitions_(zone),
       stdlib_types_(zone),
       stdlib_math_types_(zone),
       module_info_(VariableInfo::ForSpecialSymbol(zone_, kModule)),
-      global_scope_(ZoneHashMap::PointersMatch,
-                    ZoneHashMap::kDefaultHashMapCapacity,
+      global_scope_(ZoneHashMap::kDefaultHashMapCapacity,
                     ZoneAllocationPolicy(zone)),
-      local_scope_(ZoneHashMap::PointersMatch,
-                   ZoneHashMap::kDefaultHashMapCapacity,
+      local_scope_(ZoneHashMap::kDefaultHashMapCapacity,
                    ZoneAllocationPolicy(zone)),
       stack_limit_(isolate->stack_guard()->real_climit()),
       node_types_(zone_),
       fround_type_(AsmType::FroundType(zone_)),
       ffi_type_(AsmType::FFIType(zone_)) {
   InitializeStdlib();
 }
 
 namespace {
 bool ValidAsmIdentifier(Handle<String> name) {
@@ skipping 2616 matching lines @@
     return true;
   }
 
   *error_message = typer.error_message();
   return false;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8