Add Token Binding to about:flags

content/public/common/content_features.cc

Index: content/public/common/content_features.cc
diff --git a/content/public/common/content_features.cc b/content/public/common/content_features.cc
index 4329349b165e09340233e083b99ef3a561ee7b56..b8066fb53c09ff479358c312d9090b87c0a6f42f 100644
--- a/content/public/common/content_features.cc
+++ b/content/public/common/content_features.cc
@@ -23,6 +23,11 @@ const base::Feature kDownloadResumption{"DownloadResumption",
 const base::Feature kExperimentalFramework{"ExperimentalFramework",
                                            base::FEATURE_DISABLED_BY_DEFAULT};
 
+// Enables token binding
+// (https://www.ietf.org/id/draft-ietf-tokbind-protocol-04.txt).
+const base::Feature kTokenBinding{"token-binding",
+                                  base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Control whether the priority of a renderer is set when the process is
 // launched. This is in response to a bug seen on Windows. See
 // https://crbug.com/560446