Add an activity for launching a restore from backup

Change-Id: Ibd73f8549bb3ec9e829ad9082399dbbf0a6ca4f5

res/layout/intro_restore_activity.xml

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The CyanogenMod Project
+     Copyright (C) 2017 The LineageOS 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:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/primary">
+
+    <include layout="@layout/header_condensed" />
+
+    <FrameLayout android:id="@+id/page"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1">
+
+        <ScrollView android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:fillViewport="true">
+
+            <LinearLayout
+                android:orientation="vertical"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingStart="@dimen/content_margin_left"
+                android:paddingEnd="@dimen/content_margin_left"
+                style="@style/PageContent">
+
+                <TextView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    style="@style/PageSummaryText"
+                    android:textSize="16sp"
+                    android:layout_marginBottom="@dimen/summary_margin_bottom"
+                    android:paddingRight="@dimen/location_text_margin_right"
+                    android:text="@string/intro_restore_subtitle" />
+
+                <Button
+                    android:id="@+id/intro_restore_button"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:paddingLeft="@dimen/content_margin_left"
+                    android:paddingRight="@dimen/location_text_margin_right"
+                    android:gravity="center"
+                    android:textSize="16sp"
+                    android:textAllCaps="true"
+                    android:textColor="@color/white"
+                    android:background="@color/accent"
+                    android:maxLines="1"
+                    android:ellipsize="end"
+                    android:text="@string/intro_restore_button"/>
+
+            </LinearLayout>
+        </ScrollView>
+    </FrameLayout>
+
+    <com.google.android.setupdesign.view.NavigationBar
+        android:id="@+id/navigation_bar"
+        style="@style/SudNavBarTheme"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/sud_navbar_height" />
+</LinearLayout>