Deprecate FLAGS_quic_reloadable_flag_enable_async_get_proof

net/quic/chromium/crypto/proof_source_chromium.cc

Index: net/quic/chromium/crypto/proof_source_chromium.cc
diff --git a/net/quic/chromium/crypto/proof_source_chromium.cc b/net/quic/chromium/crypto/proof_source_chromium.cc
index dd8ce1f8881bf3cd71604337b878b808efda0c17..fb14ba027bd23fbc5db08d8991aef74a11367622 100644
--- a/net/quic/chromium/crypto/proof_source_chromium.cc
+++ b/net/quic/chromium/crypto/proof_source_chromium.cc
@@ -76,7 +76,7 @@ bool ProofSourceChromium::Initialize(const base::FilePath& cert_path,
   return true;
 }
 
-bool ProofSourceChromium::GetProof(
+bool ProofSourceChromium::GetProofInner(
     const QuicSocketAddress& server_addr,
     const string& hostname,
     const string& server_config,
@@ -146,8 +146,10 @@ void ProofSourceChromium::GetProof(const QuicSocketAddress& server_addr,
   string signature;
   string leaf_cert_sct;
   QuicCryptoProof out_proof;
-  const bool ok = GetProof(server_addr, hostname, server_config, quic_version,
-                           chlo_hash, connection_options, &chain, &out_proof);
+
+  const bool ok =
+      GetProofInner(server_addr, hostname, server_config, quic_version,
+                    chlo_hash, connection_options, &chain, &out_proof);
   callback->Run(ok, chain, out_proof, nullptr /* details */);
 }