use SetupEncryptionBody to show a dialog from "Verify this session"

src/components/views/dialogs/SetupEncryptionDialog.js

@@ -0,0 +1,29 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import SetupEncryptionBody from '../../structures/auth/SetupEncryptionBody';
+import BaseDialog from './BaseDialog';
+import { _t } from '../../../languageHandler';
+
+export default function SetupEncryptionDialog({onFinished}) {
+    return <BaseDialog
+        headerImage={require("../../../../res/img/e2e/warning.svg")}
+        onFinished={onFinished}
+        title={_t("Verify this session")}
+    >
+        <SetupEncryptionBody onFinished={onFinished} />
+    </BaseDialog>;
+}

src/components/views/toasts/SetupEncryptionToast.js

@@ -18,7 +18,9 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import * as sdk from "../../../index";
 import { _t } from '../../../languageHandler';
+import Modal from '../../../Modal';
 import DeviceListener from '../../../DeviceListener';
+import SetupEncryptionDialog from "../dialogs/SetupEncryptionDialog";
 import { accessSecretStorage } from '../../../CrossSigningManager';
 
 export default class SetupEncryptionToast extends React.PureComponent {
@@ -32,7 +34,12 @@ export default class SetupEncryptionToast extends React.PureComponent {
     };
 
     _onSetupClick = async () => {
-        accessSecretStorage();
+        if (this.props.kind === "verify_this_session") {
+            Modal.createTrackedDialog('Verify session', 'Verify session', SetupEncryptionDialog,
+                {}, null, /* priority = */ false, /* static = */ true);
+        } else {
+            accessSecretStorage();
+        }
     };
 
     getDescription() {