When offline show a list of countries with phone support.

Bug: 29105266

TODO:
- Support phones UI for international travel
- Selecting default country
- Show operation hours for selected country

Change-Id: I08a6780497dfcb9b9dc8670f2705d01df021c57b

res/layout/support_offline_escalation_options.xml

@@ -0,0 +1,55 @@
+<?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="wrap_content"
+    android:background="@color/card_background_grey"
+    android:gravity="center_horizontal"
+    android:paddingBottom="40dp"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/support_country_list_title"
+            android:textAppearance="@style/TextAppearance.Small"
+            android:textColor="?android:attr/textColorSecondary"/>
+        <Spinner
+            android:id="@+id/spinner"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"/>
+    </LinearLayout>
+    <Button
+        android:id="@android:id/text1"
+        style="@style/SupportPrimaryButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="8dp"/>
+    <Button
+        android:id="@android:id/text2"
+        style="@style/SupportSecondaryButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:minHeight="48dp"/>
+</LinearLayout>