Remove the notifyFailedSignedIn callback from Chromium.

components/password_manager/content/browser/credential_manager_dispatcher.cc

Index: components/password_manager/content/browser/credential_manager_dispatcher.cc
diff --git a/components/password_manager/content/browser/credential_manager_dispatcher.cc b/components/password_manager/content/browser/credential_manager_dispatcher.cc
index 01e182ecfb354feaa1462c903f447fa025e17f83..ab48d621f6dfdb2a80a13b661d3cc056e1b07664 100644
--- a/components/password_manager/content/browser/credential_manager_dispatcher.cc
+++ b/components/password_manager/content/browser/credential_manager_dispatcher.cc
@@ -40,8 +40,6 @@ bool CredentialManagerDispatcher::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(CredentialManagerDispatcher, message)
-    IPC_MESSAGE_HANDLER(CredentialManagerHostMsg_NotifyFailedSignIn,
-                        OnNotifyFailedSignIn);
     IPC_MESSAGE_HANDLER(CredentialManagerHostMsg_NotifySignedIn,
                         OnNotifySignedIn);
     IPC_MESSAGE_HANDLER(CredentialManagerHostMsg_RequireUserMediation,
@@ -53,15 +51,6 @@ bool CredentialManagerDispatcher::OnMessageReceived(
   return handled;
 }
 
-void CredentialManagerDispatcher::OnNotifyFailedSignIn(int request_id,
-                                                       const CredentialInfo&) {
-  DCHECK(request_id);
-  // TODO(mkwst): This is a stub.
-  web_contents()->GetRenderViewHost()->Send(
-      new CredentialManagerMsg_AcknowledgeFailedSignIn(
-          web_contents()->GetRenderViewHost()->GetRoutingID(), request_id));
-}
-
 void CredentialManagerDispatcher::OnNotifySignedIn(
     int request_id,
     const password_manager::CredentialInfo& credential) {