java/com/android/dialer/widget/res/layout/fragment_message.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2016 The Android Open Source Project
  ~
  ~ 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="match_parent"
  android:orientation="vertical"
  android:gravity="bottom"
  android:background="@color/background_dialer_white">

  <LinearLayout
    android:id="@+id/message_container"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

  <View
    android:layout_width="match_parent"
    android:layout_height="@dimen/message_divider_height"
    android:background="#12000000"/>

  <RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <EditText
      android:id="@+id/custom_message"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:padding="@dimen/textview_item_padding"
      android:textSize="@dimen/message_item_text_size"
      android:hint="@string/custom_message_hint"
      android:textColor="@color/dialer_primary_text_color"
      android:textColorHint="@color/dialer_edit_text_hint_color"
      android:background="@color/background_dialer_white"
      android:textCursorDrawable="@drawable/searchedittext_custom_cursor"
      android:layout_toStartOf="@+id/count_and_send_container"/>

    <LinearLayout
      android:id="@+id/count_and_send_container"
      android:orientation="vertical"
      android:layout_width="@dimen/send_container_width"
      android:layout_height="wrap_content"
      android:layout_alignParentEnd="true"
      android:layout_centerVertical="true"
      android:paddingEnd="@dimen/textview_item_padding"
      android:gravity="center">

      <ImageView
        android:id="@+id/send_message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:src="@drawable/quantum_ic_send_white_24"
        android:background="?android:attr/selectableItemBackgroundBorderless"
        android:tint="@color/dialer_tint_state"/>

      <TextView
        android:id="@+id/remaining_characters"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:textSize="@dimen/message_remaining_char_text_size"
        android:textColor="@color/dialer_edit_text_hint_color"/>
    </LinearLayout>
  </RelativeLayout>
</LinearLayout>