res/layout/compose_recipients.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright (C) 2011 Google Inc.
     Licensed to 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:id="@+id/compose_recipients_wrapper"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <!-- To -->
    <LinearLayout
        android:id="@+id/to_content"
        style="@style/RecipientComposeFieldLayout">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingRight="0dp"
            style="@style/ComposeFieldContent">

            <TextView
                android:id="@+id/to_label"
                android:contentDescription="@string/to"
                android:text="@string/to"
                style="@style/ComposeHeading" />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="@dimen/compose_header_min_height"
                android:orientation="vertical">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">

                    <com.android.ex.chips.RecipientEditTextView
                        android:id="@+id/to"
                        android:contentDescription="@string/to"
                        android:dropDownAnchor="@id/to_content"
                        style="@style/ToRecipientEditTextViewStyle" />

                    <ImageView
                        android:id="@+id/add_cc_bcc"
                        android:src="@drawable/ic_expand_more_24dp"
                        android:contentDescription="@string/add_cc_label"
                        style="@style/ComposeFieldButton" />

                </LinearLayout>

                <!--
                    0dp high space just so the anchor has appropriate right padding since it was
                    removed for To field to compensate the show cc/bcc button
                -->
                <Space
                    android:id="@+id/compose_to_dropdown_anchor"
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    style="@style/ComposeToDropdownAnchor" />

            </LinearLayout>

        </LinearLayout>

        <View style="@style/RecipientComposeFieldSpacer" />
    </LinearLayout>

    <!-- Cc/Bcc -->
    <com.android.mail.compose.CcBccView
        android:id="@+id/cc_bcc_wrapper"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>