Create a QUIC wrapper around a mutex and a mutex lock.

net/quic/core/crypto/quic_crypto_server_config.h

Index: net/quic/core/crypto/quic_crypto_server_config.h
diff --git a/net/quic/core/crypto/quic_crypto_server_config.h b/net/quic/core/crypto/quic_crypto_server_config.h
index f8f10ba3d458ff6e8e12dad9ae23cd9948b1524c..28f65f7564df000aa9aada7820a4ba14deb40150 100644
--- a/net/quic/core/crypto/quic_crypto_server_config.h
+++ b/net/quic/core/crypto/quic_crypto_server_config.h
@@ -16,7 +16,6 @@
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_piece.h"
-#include "base/synchronization/lock.h"
 #include "net/base/ip_address.h"
 #include "net/base/ip_endpoint.h"
 #include "net/quic/core/crypto/crypto_handshake.h"
@@ -30,6 +29,7 @@
 #include "net/quic/core/proto/source_address_token.pb.h"
 #include "net/quic/core/quic_time.h"
 #include "net/quic/platform/api/quic_export.h"
+#include "net/quic/platform/api/quic_mutex.h"
 #include "net/quic/platform/api/quic_socket_address.h"
 
 namespace net {
@@ -739,18 +739,19 @@ class QUIC_EXPORT_PRIVATE QuicCryptoServerConfig {
   //   1) configs_.empty() <-> primary_config_ == nullptr
   //   2) primary_config_ != nullptr -> primary_config_->is_primary
   //   3) ∀ c∈configs_, c->is_primary <-> c == primary_config_
-  mutable base::Lock configs_lock_;
+  mutable QuicMutex configs_lock_;
   // configs_ contains all active server configs. It's expected that there are
   // about half-a-dozen configs active at any one time.
-  ConfigMap configs_;
+  ConfigMap configs_ GUARDED_BY(configs_lock_);
   // primary_config_ points to a Config (which is also in |configs_|) which is
   // the primary config - i.e. the one that we'll give out to new clients.
-  mutable scoped_refptr<Config> primary_config_;
+  mutable scoped_refptr<Config> primary_config_ GUARDED_BY(configs_lock_);
   // next_config_promotion_time_ contains the nearest, future time when an
   // active config will be promoted to primary.
-  mutable QuicWallTime next_config_promotion_time_;
+  mutable QuicWallTime next_config_promotion_time_ GUARDED_BY(configs_lock_);
   // Callback to invoke when the primary config changes.
-  std::unique_ptr<PrimaryConfigChangedCallback> primary_config_changed_cb_;
+  std::unique_ptr<PrimaryConfigChangedCallback> primary_config_changed_cb_
+      GUARDED_BY(configs_lock_);
 
   // Used to protect the source-address tokens that are given to clients.
   CryptoSecretBoxer source_address_token_boxer_;