Credential Management: Rename 'notifySignedOut' to 'requireUserMediation' (3/3)

Source/modules/credentialmanager/CredentialManagerClient.cpp

Index: Source/modules/credentialmanager/CredentialManagerClient.cpp
diff --git a/Source/modules/credentialmanager/CredentialManagerClient.cpp b/Source/modules/credentialmanager/CredentialManagerClient.cpp
index cf1df43476ff5d98765a85fcef2217b8d291042d..ffdf0cd7234ed6391ae3086f9bb737ec81c6b776 100644
--- a/Source/modules/credentialmanager/CredentialManagerClient.cpp
+++ b/Source/modules/credentialmanager/CredentialManagerClient.cpp
@@ -70,9 +70,6 @@ void CredentialManagerClient::dispatchRequireUserMediation(WebCredentialManagerC
     if (!m_client)
         return;
     m_client->dispatchRequireUserMediation(callbacks);
-
-    // TODO(mkwst): Drop this once the Chromium side is updated. https://crbug.com/494880
-    m_client->dispatchSignedOut(callbacks);
 }
 
 void CredentialManagerClient::dispatchRequest(bool zeroClickOnly, const WebVector<WebURL>& federations, WebCredentialManagerClient::RequestCallbacks* callbacks)