Simplify lifetime management of ValidateClientHelloResultCallback::Result objects

net/tools/quic/stateless_rejector.cc

Index: net/tools/quic/stateless_rejector.cc
diff --git a/net/tools/quic/stateless_rejector.cc b/net/tools/quic/stateless_rejector.cc
index 3c142cedd677b3f75272160615be4a7ef5b1d122..005c335aa2a9059c664d2e330bb56ff706153481 100644
--- a/net/tools/quic/stateless_rejector.cc
+++ b/net/tools/quic/stateless_rejector.cc
@@ -19,12 +19,11 @@ class StatelessRejector::ValidateCallback
 
   ~ValidateCallback() override {}
 
-  void RunImpl(const CryptoHandshakeMessage& client_hello,
-               const Result& result,
+  void RunImpl(std::unique_ptr<Result> result,
                std::unique_ptr<ProofSource::Details> /* proof_source_details */)
       override {
     StatelessRejector* rejector_ptr = rejector_.get();
-    rejector_ptr->ProcessClientHello(client_hello, result, std::move(rejector_),
+    rejector_ptr->ProcessClientHello(*result, std::move(rejector_),
                                      std::move(cb_));
   }
 
@@ -97,7 +96,6 @@ void StatelessRejector::Process(std::unique_ptr<StatelessRejector> rejector,
 }
 
 void StatelessRejector::ProcessClientHello(
-    const CryptoHandshakeMessage& client_hello,
     const ValidateClientHelloResultCallback::Result& result,
     std::unique_ptr<StatelessRejector> rejector,
     std::unique_ptr<StatelessRejector::ProcessDoneCallback> cb) {