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 fd11f2dc56541ed73fbaeafbc846378523e59bfd..f5fde91c076f84dbbac8ab5d8b5aa4f1a2ac127a 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -705,8 +705,8 @@ 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.
@@ -1594,6 +1594,8 @@ class CORE_EXPORT UseCounter {
     kWebDatabaseCreateDropFTS3Table = 1980,
     kFieldEditInSecureContext = 1981,
     kFieldEditInNonSecureContext = 1982,
+    kCredentialManagerCredentialRequestOptionsUnmediated = 1983,
+    kCredentialManagerGetMediationRequired = 1984,
 
     // Add new features immediately above this line. Don't change assigned
     // numbers of any item, and don't reuse removed slots.