Deprecate CredentialRequestOptions.unmediated in favor mediation enum

third_party/WebKit/public/platform/WebCredentialMediationRequirement.h

Index: third_party/WebKit/public/platform/WebCredentialMediationRequirement.h
diff --git a/third_party/WebKit/public/platform/WebCredentialMediationRequirement.h b/third_party/WebKit/public/platform/WebCredentialMediationRequirement.h
new file mode 100644
index 0000000000000000000000000000000000000000..63639f76fb9f978aba9c12e2cdcea837c2c7b085
--- /dev/null
+++ b/third_party/WebKit/public/platform/WebCredentialMediationRequirement.h
@@ -0,0 +1,14 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WebCredentialMediationRequirement_h
+#define WebCredentialMediationRequirement_h
+
+namespace blink {
+
+enum class WebCredentialMediationRequirement { kSilent, kOptional, kRequired };
+
+}  // namespace blink
+
+#endif