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

net/http/http_network_session.h

Index: net/http/http_network_session.h
diff --git a/net/http/http_network_session.h b/net/http/http_network_session.h
index d8e867fa0867ddbe5194ccd94ffa84e188abdf75..8efe9740de588269cc4e3a8bcf7926ae64cc1322 100644
--- a/net/http/http_network_session.h
+++ b/net/http/http_network_session.h
@@ -20,7 +20,7 @@
 #include "base/memory/memory_pressure_monitor.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/dns/host_resolver.h"
@@ -73,9 +73,7 @@ const uint32_t kSpdyMaxHeaderTableSize = 64 * 1024;
 const uint32_t kSpdyMaxConcurrentPushedStreams = 1000;
 
 // This class holds session objects used by HttpNetworkTransaction objects.
-class NET_EXPORT HttpNetworkSession
-    : NON_EXPORTED_BASE(public base::NonThreadSafe),
-      public base::MemoryCoordinatorClient {
+class NET_EXPORT HttpNetworkSession : public base::MemoryCoordinatorClient {
  public:
   struct NET_EXPORT Params {
     Params();
@@ -321,6 +319,8 @@ class NET_EXPORT HttpNetworkSession
   Params params_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
+
+  SEQUENCE_CHECKER(sequence_checker_);
 };
 
 }  // namespace net