Deprecate CredentialRequestOptions.unmediated in favor mediation enum

third_party/WebKit/Source/core/frame/UseCounter.h

Index: third_party/WebKit/Source/core/frame/UseCounter.h
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.h b/third_party/WebKit/Source/core/frame/UseCounter.h
index f9cc00e5e8d760b3191c0d9d01aa7b89f113500d..fb122c6dde92d0a31118a91d840b74576e52096d 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -700,8 +700,8 @@ class CORE_EXPORT UseCounter {
     kBackspaceNavigatedBackAfterFormInteraction = 958,
     kCSPSourceWildcardWouldMatchExactHost = 959,
     kCredentialManagerGet = 960,
-    kCredentialManagerGetWithUI = 961,
-    kCredentialManagerGetWithoutUI = 962,
+    kCredentialManagerGetMediationOptional = 961,
+    kCredentialManagerGetMediationSilent = 962,
     kCredentialManagerStore = 963,
     kCredentialManagerRequireUserMediation = 964,
     // The above items are available in M47 branch.
@@ -1583,6 +1583,8 @@ class CORE_EXPORT UseCounter {
     kPostMessageOutgoingWouldBeBlockedByConnectSrc = 1974,
     kPostMessageIncomingWouldBeBlockedByConnectSrc = 1975,
     kPaymentRequestNetworkNameInSupportedMethods = 1976,
+    kCredentialManagerCredentialRequestOptionsUnmediated = 1977,
+    kCredentialManagerGetMediationRequired = 1978,
 
     // Add new features immediately above this line. Don't change assigned
     // numbers of any item, and don't reuse removed slots.