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

net/http/http_network_layer.h

Index: net/http/http_network_layer.h
diff --git a/net/http/http_network_layer.h b/net/http/http_network_layer.h
index 86679ddb0026178c1ab709034630545ae24f8e4d..c46b50edafe3772754fe728083904a207feddc7b 100644
--- a/net/http/http_network_layer.h
+++ b/net/http/http_network_layer.h
@@ -12,7 +12,7 @@
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/power_monitor/power_observer.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/threading/thread_checker.h"
 #include "net/base/net_export.h"
 #include "net/http/http_transaction_factory.h"
 
@@ -20,10 +20,8 @@ namespace net {
 
 class HttpNetworkSession;
 
-class NET_EXPORT HttpNetworkLayer
-    : public HttpTransactionFactory,
-      public base::PowerObserver,
-      NON_EXPORTED_BASE(public base::NonThreadSafe) {
+class NET_EXPORT HttpNetworkLayer : public HttpTransactionFactory,
+                                    public base::PowerObserver {
  public:
   // Construct a HttpNetworkLayer with an existing HttpNetworkSession which
   // contains a valid ProxyService. The HttpNetworkLayer must be destroyed
@@ -45,6 +43,8 @@ class NET_EXPORT HttpNetworkLayer
   HttpNetworkSession* const session_;
   bool suspended_;
 
+  THREAD_CHECKER(thread_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(HttpNetworkLayer);
 };