feat(native-participants-panel) created participants panel overflowmenu button

react/features/participants-pane/components/native/ParticipantsPanelButton.js

+// @flow
+
+import type { Dispatch } from 'redux';
+
+import { translate } from '../../../base/i18n';
+import { IconParticipants } from '../../../base/icons';
+import { connect } from '../../../base/redux';
+import { AbstractButton, type AbstractButtonProps } from '../../../base/toolbox/components';
+
+type Props = AbstractButtonProps & {
+
+    /**
+     * The redux {@code dispatch} function.
+     */
+    dispatch: Dispatch<any>
+};
+
+
+/**
+ * Implements an {@link AbstractButton} to open the participants panel.
+ */
+class ParticipantsPanelButton extends AbstractButton<Props, *> {
+    accessibilityLabel = 'toolbar.accessibilityLabel.participants';
+    icon = IconParticipants;
+    label = 'toolbar.participants';
+
+    /**
+     * Handles clicking / pressing the button, and opens the participants panel.
+     *
+     * @private
+     * @returns {void}
+     */
+}
+
+/**
+ * Maps part of the redux state to the component's props.
+ *
+ * @param {Object} state - The redux store/state.
+ * @returns {Props}
+ */
+function mapStateToProps(state: Object) {
+
+    return {
+        state
+    };
+}
+
+export default translate(connect(mapStateToProps)(ParticipantsPanelButton));

react/features/participants-pane/components/native/index.js

+// @flow
+
+export { default as ParticipantsPanelButton } from './ParticipantsPanelButton';

react/features/toolbox/components/native/OverflowMenu.js

 import { SharedDocumentButton } from '../../../etherpad';
 import { InviteButton } from '../../../invite';
 import { AudioRouteButton } from '../../../mobile/audio-mode';
+import { ParticipantsPaneButton } from '../../../participants-pane/components/native';
 import { ReactionMenu } from '../../../reactions/components';
 import { LiveStreamButton, RecordButton } from '../../../recording';
 import SecurityDialogButton from '../../../security/components/security-dialog/SecurityDialogButton';
                     ? null
                     : this._renderReactionMenu }>
                 <AudioRouteButton { ...topButtonProps } />
+                <ParticipantsPaneButton { ...buttonProps } />
                 {!toolbarButtons.has('invite') && <InviteButton { ...buttonProps } />}
                 <AudioOnlyButton { ...buttonProps } />
                 <SecurityDialogButton { ...buttonProps } />