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 f6209bfbf07310e33332a7888b0df623891f4463..89feb0ec9ce63d08b4aff3ee2ce6c8fdfd714260 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.
@@ -1585,6 +1585,8 @@ class CORE_EXPORT UseCounter {
     kPaymentRequestNetworkNameInSupportedMethods = 1976,
     kCrossOriginPropertyAccess = 1977,
     kCrossOriginPropertyAccessFromOpener = 1978,
+    kCredentialManagerCredentialRequestOptionsUnmediated = 1979,
+    kCredentialManagerGetMediationRequired = 1980,
 
     // Add new features immediately above this line. Don't change assigned
     // numbers of any item, and don't reuse removed slots.