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

net/http/http_auth_controller.h

Index: net/http/http_auth_controller.h
diff --git a/net/http/http_auth_controller.h b/net/http/http_auth_controller.h
index f6c2d743bff645bbbb4de3c9f5d3644a93a8dc28..bbbcea0d0add0a5a91d566fdb2c34601764ccfbf 100644
--- a/net/http/http_auth_controller.h
+++ b/net/http/http_auth_controller.h
@@ -10,7 +10,7 @@
 #include <string>
 
 #include "base/memory/ref_counted.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
 #include "net/http/http_auth.h"
@@ -29,8 +29,7 @@ struct HttpRequestInfo;
 class SSLInfo;
 
 class NET_EXPORT_PRIVATE HttpAuthController
-    : public base::RefCounted<HttpAuthController>,
-      NON_EXPORTED_BASE(public base::NonThreadSafe) {
+    : public base::RefCounted<HttpAuthController> {
  public:
   // The arguments are self explanatory except possibly for |auth_url|, which
   // should be both the auth target and auth path in a single url argument.
@@ -170,6 +169,8 @@ class NET_EXPORT_PRIVATE HttpAuthController
   std::set<HttpAuth::Scheme> disabled_schemes_;
 
   CompletionCallback callback_;
+
+  SEQUENCE_CHECKER(sequence_checker_);
 };
 
 }  // namespace net