Deprecate CredentialRequestOptions.unmediated in favor mediation enum

third_party/WebKit/Source/core/frame/Deprecation.cpp

 // Copyright 2016 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.
 
 #include "core/frame/Deprecation.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 389 matching lines @@
           milestoneString(M60));
 
     case UseCounter::kV8RTCPeerConnection_GetStreamById_Method:
       return willBeRemoved("RTCPeerConnection.getStreamById()", M62,
                            "5751819573657600");
 
     case UseCounter::kV8SVGPathElement_GetPathSegAtLength_Method:
       return willBeRemoved("SVGPathElement.getPathSegAtLength", M62,
                            "5638783282184192");
 
+    case UseCounter::kCredentialManagerCredentialRequestOptionsUnmediated:
+      return replacedWillBeRemoved(
+          "The boolean flag CredentialRequestOptions.unmediated",
+          "the CredentialRequestOptions.mediation enum", M62,
+          "6076479909658624");
+
     // Features that aren't deprecated don't have a deprecation message.
     default:
       return String();
   }
 }
 
 }  // namespace blink