wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/drawer_chat_action.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright 2017 Google Inc.
  ~
  ~ 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.
  -->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal"
    android:orientation="horizontal">

    <ImageButton
        android:id="@+id/button_speech"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@null"
        android:src="@drawable/ic_mic_black_24dp"
        android:tint="@color/blue_15"
        android:contentDescription="@string/open_speech_input"
        android:layout_margin="@dimen/action_drawer_item_margin" />

    <ImageButton
        android:id="@+id/button_keyboard"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@null"
        android:src="@drawable/ic_keyboard_black_24dp"
        android:contentDescription="@string/open_keyboard_input"
        android:tint="@color/blue_15"
        android:layout_margin="@dimen/action_drawer_item_margin" />

</LinearLayout>