Make syzyasan_rtl compile in 64 bit

syzygy/agent/asan/runtime.h

 // Copyright 2012 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 299 matching lines @@
   // The runtime parameters.
   ::common::InflatedAsanParameters params_;
 
   // The tick counter when the runtime was created. This is used for
   // bracketing valid alloc and free ticks values.
   uint32_t starting_ticks_;
 
   // The set of thread IDs that have been seen in the current process.
   // This is used to validate thread IDs in a block trailer.
   base::Lock thread_ids_lock_;
-  base::hash_set<uint32_t> thread_ids_;  // Under thread_ids_lock_.
+  std::unordered_set<uint32_t> thread_ids_;  // Under thread_ids_lock_.
 
   // A random key that is generated on object creation. This is used for
   // correlating duplicate crash reports on the back-end.
   const uint64_t random_key_;
 
   // The crash reporter in use. This will be left null if no crash reporter
   // is available.
   std::unique_ptr<ReporterInterface> crash_reporter_;
 
   DISALLOW_COPY_AND_ASSIGN(AsanRuntime);
 };
 
 }  // namespace asan
 }  // namespace agent
 
 #endif  // SYZYGY_AGENT_ASAN_RUNTIME_H_