Revert of Reland: Switch components/password_manager code from IPC messages to Mojo.

components/password_manager/content/public/interfaces/credential_manager.mojom

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-module password_manager.mojom;
-
-import "url/mojo/origin.mojom";
-
-enum CredentialType {
-  EMPTY,
-  PASSWORD,
-  FEDERATED
-};
-
-enum CredentialManagerError {
-  SUCCESS,
-  DISABLED,
-  PENDINGREQUEST,
-  PASSWORDSTOREUNAVAILABLE,
-  UNKNOWN
-};
-
-struct CredentialInfo {
-  CredentialType type = EMPTY;
-  string id = "";
-  string name = "";
-  string icon = "";
-  string password = "";
-  url.mojom.Origin federation;
-};
-
-interface CredentialManager {
-  // Store credential. For navigator.credentials.store().
-  Store(CredentialInfo credential) => ();
-
-  // Require user mediation. For navigator.credentials.requireUserMediation().
-  RequireUserMediation() => ();
-
-  // Get Credential. For navigator.credentials.get().
-  // The result callback will return a non-null and valid CredentialInfo
-  // if succeeded, or null with a CredentialManagerError if failed.
-  Get(bool zero_click_only, bool include_passwords, array<string> federations)
-      => (CredentialManagerError error, CredentialInfo? credential);
-};