Deprecate NonThreadSafe in net/ in favor of SequenceChecker/ThreadChecker.

net/http/http_server_properties_impl.h

Index: net/http/http_server_properties_impl.h
diff --git a/net/http/http_server_properties_impl.h b/net/http/http_server_properties_impl.h
index 598b4474e88d2ed590dd46978f44283ee610da38..91193d6b01ae7d46adb421bf868a221921a01f15 100644
--- a/net/http/http_server_properties_impl.h
+++ b/net/http/http_server_properties_impl.h
@@ -16,7 +16,7 @@
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "base/values.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/ip_address.h"
@@ -37,9 +37,7 @@ struct AlternativeServiceHash {
 };
 
 // The implementation for setting/retrieving the HTTP server properties.
-class NET_EXPORT HttpServerPropertiesImpl
-    : public HttpServerProperties,
-      NON_EXPORTED_BASE(public base::NonThreadSafe) {
+class NET_EXPORT HttpServerPropertiesImpl : public HttpServerProperties {
  public:
   HttpServerPropertiesImpl();
   ~HttpServerPropertiesImpl() override;
@@ -175,6 +173,8 @@ class NET_EXPORT HttpServerPropertiesImpl
   QuicServerInfoMap quic_server_info_map_;
   size_t max_server_configs_stored_in_properties_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);