diff --git a/libs/WindowManager/Shell/res/color/letterbox_restart_button_background_ripple.xml b/libs/WindowManager/Shell/res/color/letterbox_restart_button_background_ripple.xml
new file mode 100644
index 0000000000000..a3ca74fac4e6c
--- /dev/null
+++ b/libs/WindowManager/Shell/res/color/letterbox_restart_button_background_ripple.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@android:color/system_neutral1_900" android:alpha="0.6" />
+</selector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/color/letterbox_restart_dismiss_button_background_ripple.xml b/libs/WindowManager/Shell/res/color/letterbox_restart_dismiss_button_background_ripple.xml
new file mode 100644
index 0000000000000..a3ca74fac4e6c
--- /dev/null
+++ b/libs/WindowManager/Shell/res/color/letterbox_restart_dismiss_button_background_ripple.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@android:color/system_neutral1_900" android:alpha="0.6" />
+</selector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_button_background.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_button_background.xml
new file mode 100644
index 0000000000000..60f3cfe6dde6f
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_button_background.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+       android:shape="rectangle">
+    <solid android:color="?androidprv:attr/colorAccentPrimaryVariant"/>
+    <corners android:radius="@dimen/letterbox_restart_dialog_button_radius"/>
+</shape>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_button_background_ripple.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_button_background_ripple.xml
new file mode 100644
index 0000000000000..ef97ea19e9936
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_button_background_ripple.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+        android:color="@color/letterbox_restart_button_background_ripple">
+    <item android:drawable="@drawable/letterbox_restart_button_background"/>
+</ripple>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_button.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_button.xml
new file mode 100644
index 0000000000000..c247c6e4c8cfb
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_button.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android" >
+    <item android:state_checked="true"
+          android:drawable="@drawable/letterbox_restart_checkbox_checked" />
+    <item android:state_pressed="true"
+          android:drawable="@drawable/letterbox_restart_checkbox_checked" />
+    <item android:state_pressed="false"
+          android:drawable="@drawable/letterbox_restart_checkbox_unchecked" />
+</selector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_checked.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_checked.xml
new file mode 100644
index 0000000000000..4f97e2c7ea0d1
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_checked.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="20dp"
+        android:height="20dp"
+        android:viewportWidth="20"
+        android:viewportHeight="20"
+        android:tint="?android:attr/textColorSecondary">
+    <group
+        android:scaleX="0.83333333333"
+        android:scaleY="0.83333333333"
+        android:translateX="0"
+        android:translateY="0">
+        <path
+            android:fillColor="?android:attr/textColorSecondary"
+            android:pathData="M10.6,16.2 L17.65,9.15 16.25,7.75 10.6,13.4 7.75,10.55 6.35,11.95ZM5,21Q4.175,21 3.587,20.413Q3,19.825 3,19V5Q3,4.175 3.587,3.587Q4.175,3 5,3H19Q19.825,3 20.413,3.587Q21,4.175 21,5V19Q21,19.825 20.413,20.413Q19.825,21 19,21Z"/>
+    </group>
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_unchecked.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_unchecked.xml
new file mode 100644
index 0000000000000..bb14d1961e818
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_checkbox_unchecked.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="20dp"
+        android:height="20dp"
+        android:viewportWidth="20"
+        android:viewportHeight="20"
+        android:tint="?android:attr/textColorSecondary">
+    <group
+        android:scaleX="0.83333333333"
+        android:scaleY="0.83333333333"
+        android:translateX="0"
+        android:translateY="0">
+        <path
+            android:fillColor="?android:attr/textColorSecondary"
+            android:pathData="M5,21Q4.175,21 3.587,20.413Q3,19.825 3,19V5Q3,4.175 3.587,3.587Q4.175,3 5,3H19Q19.825,3 20.413,3.587Q21,4.175 21,5V19Q21,19.825 20.413,20.413Q19.825,21 19,21ZM5,19H19Q19,19 19,19Q19,19 19,19V5Q19,5 19,5Q19,5 19,5H5Q5,5 5,5Q5,5 5,5V19Q5,19 5,19Q5,19 5,19Z"/>
+    </group>
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_dialog_background.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_dialog_background.xml
new file mode 100644
index 0000000000000..e3c18a2db66fe
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_dialog_background.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+       android:shape="rectangle">
+    <solid android:color="?androidprv:attr/colorSurface"/>
+    <corners android:radius="@dimen/letterbox_restart_dialog_corner_radius"/>
+</shape>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_dismiss_button_background.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_dismiss_button_background.xml
new file mode 100644
index 0000000000000..af89d41ee6b54
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_dismiss_button_background.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+       android:shape="rectangle">
+    <stroke android:color="?androidprv:attr/colorAccentPrimaryVariant" android:width="1dp"/>
+    <solid android:color="?androidprv:attr/colorSurface" />
+    <corners android:radius="@dimen/letterbox_restart_dialog_button_radius"/>
+</shape>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_dismiss_button_background_ripple.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_dismiss_button_background_ripple.xml
new file mode 100644
index 0000000000000..e32aefca78acd
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_dismiss_button_background_ripple.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+        android:color="@color/letterbox_restart_dismiss_button_background_ripple">
+    <item android:drawable="@drawable/letterbox_restart_dismiss_button_background"/>
+</ripple>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_header_ic_arrows.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_header_ic_arrows.xml
new file mode 100644
index 0000000000000..5053971a17d3a
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_header_ic_arrows.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+        android:width="@dimen/letterbox_restart_dialog_title_icon_width"
+        android:height="@dimen/letterbox_restart_dialog_title_icon_height"
+        android:viewportWidth="45"
+        android:viewportHeight="44">
+    <group
+        android:scaleX="0.8"
+        android:scaleY="0.8"
+        android:translateX="8"
+        android:translateY="8">
+        <path
+            android:pathData="M0,36V24.5H3V30.85L10.4,23.45L12.55,25.6L5.15,33H11.5V36H0ZM24.5,36V33H30.85L23.5,25.65L25.65,23.5L33,30.85V24.5H36V36H24.5ZM10.35,12.5L3,5.15V11.5H0V0H11.5V3H5.15L12.5,10.35L10.35,12.5ZM25.65,12.5L23.5,10.35L30.85,3H24.5V0H36V11.5H33V5.15L25.65,12.5Z"
+            android:fillColor="?androidprv:attr/colorAccentPrimaryVariant"/>
+    </group>
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/letterbox_restart_ic_arrows.xml b/libs/WindowManager/Shell/res/drawable/letterbox_restart_ic_arrows.xml
new file mode 100644
index 0000000000000..b6e0172af1df2
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/letterbox_restart_ic_arrows.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2022 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="@dimen/letterbox_restart_dialog_title_icon_width"
+        android:height="@dimen/letterbox_restart_dialog_title_icon_height"
+        android:viewportWidth="45"
+        android:viewportHeight="44">
+    <group
+        android:scaleX="0.8"
+        android:scaleY="0.8"
+        android:translateX="8"
+        android:translateY="8">
+        <path
+            android:pathData="M0,36V24.5H3V30.85L10.4,23.45L12.55,25.6L5.15,33H11.5V36H0ZM24.5,36V33H30.85L23.5,25.65L25.65,23.5L33,30.85V24.5H36V36H24.5ZM10.35,12.5L3,5.15V11.5H0V0H11.5V3H5.15L12.5,10.35L10.35,12.5ZM25.65,12.5L23.5,10.35L30.85,3H24.5V0H36V11.5H33V5.15L25.65,12.5Z"
+            android:fillColor="@color/compat_controls_text"/>
+    </group>
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml b/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml
new file mode 100644
index 0000000000000..ba9852c4dd6b3
--- /dev/null
+++ b/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml
@@ -0,0 +1,142 @@
+<!--
+  ~ Copyright (C) 2023 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.
+  -->
+<com.android.wm.shell.compatui.RestartDialogLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:background="@android:color/system_neutral1_900">
+
+    <!-- The background of the top-level layout acts as the background dim. -->
+
+    <!--TODO (b/266288912): Resolve overdraw warning -->
+
+    <!-- Vertical margin will be set dynamically since it depends on task bounds.
+         Setting the alpha of the dialog container to 0, since it shouldn't be visible until the
+         enter animation starts. -->
+    <FrameLayout
+        android:id="@+id/letterbox_restart_dialog_container"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/letterbox_restart_dialog_margin"
+        android:background="@drawable/letterbox_restart_dialog_background"
+        android:alpha="0"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintWidth_max="@dimen/letterbox_restart_dialog_width">
+
+        <!-- The ScrollView should only wrap the content of the dialog, otherwise the background
+             corner radius will be cut off when scrolling to the top/bottom. -->
+
+        <ScrollView android:layout_width="match_parent"
+                    android:layout_height="wrap_content">
+
+            <LinearLayout
+                android:padding="24dp"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_horizontal"
+                android:orientation="vertical">
+
+                <ImageView
+                    android:importantForAccessibility="no"
+                    android:layout_width="@dimen/letterbox_restart_dialog_title_icon_width"
+                    android:layout_height="@dimen/letterbox_restart_dialog_title_icon_height"
+                    android:src="@drawable/letterbox_restart_header_ic_arrows"/>
+
+                <TextView
+                    android:layout_marginVertical="16dp"
+                    android:id="@+id/letterbox_restart_dialog_title"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="@string/letterbox_restart_dialog_title"
+                    android:textAlignment="center"
+                    android:textAppearance="@style/RestartDialogTitleText"/>
+
+                <TextView
+                    android:textAppearance="@style/RestartDialogBodyText"
+                    android:id="@+id/letterbox_restart_dialog_description"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="@string/letterbox_restart_dialog_description"
+                    android:textAlignment="center"/>
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal"
+                    android:layout_gravity="center_vertical"
+                    android:layout_marginVertical="32dp">
+
+                    <CheckBox
+                        android:id="@+id/letterbox_restart_dialog_checkbox"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:button="@drawable/letterbox_restart_checkbox_button"/>
+
+                    <TextView
+                        android:textAppearance="@style/RestartDialogCheckboxText"
+                        android:layout_marginStart="12dp"
+                        android:id="@+id/letterbox_restart_dialog_checkbox_description"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:text="@string/letterbox_restart_dialog_checkbox_title"
+                        android:textAlignment="textStart"/>
+
+                </LinearLayout>
+
+                <FrameLayout
+                    android:minHeight="@dimen/letterbox_restart_dialog_button_height"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content">
+
+                    <Button
+                        android:textAppearance="@style/RestartDialogDismissButton"
+                        android:id="@+id/letterbox_restart_dialog_dismiss_button"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:minWidth="@dimen/letterbox_restart_dialog_button_width"
+                        android:minHeight="@dimen/letterbox_restart_dialog_button_height"
+                        android:layout_gravity="start"
+                        android:background=
+                            "@drawable/letterbox_restart_dismiss_button_background_ripple"
+                        android:text="@string/letterbox_restart_cancel"
+                        android:contentDescription="@string/letterbox_restart_cancel"/>
+
+                    <Button
+                        android:textAppearance="@style/RestartDialogConfirmButton"
+                        android:id="@+id/letterbox_restart_dialog_restart_button"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:minWidth="@dimen/letterbox_restart_dialog_button_width"
+                        android:minHeight="@dimen/letterbox_restart_dialog_button_height"
+                        android:layout_gravity="end"
+                        android:background=
+                            "@drawable/letterbox_restart_button_background_ripple"
+                        android:text="@string/letterbox_restart_restart"
+                        android:contentDescription="@string/letterbox_restart_restart"/>
+
+                </FrameLayout>
+
+            </LinearLayout>
+
+        </ScrollView>
+
+    </FrameLayout>
+
+</com.android.wm.shell.compatui.RestartDialogLayout>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/values/dimen.xml b/libs/WindowManager/Shell/res/values/dimen.xml
index 3ee20ea95ee54..a1da649458455 100644
--- a/libs/WindowManager/Shell/res/values/dimen.xml
+++ b/libs/WindowManager/Shell/res/values/dimen.xml
@@ -273,6 +273,39 @@
     <!-- The space between two actions in the letterbox education dialog -->
     <dimen name="letterbox_education_dialog_space_between_actions">24dp</dimen>
 
+    <!-- The margin between the dialog container and its parent. -->
+    <dimen name="letterbox_restart_dialog_margin">24dp</dimen>
+
+    <!-- The corner radius of the restart confirmation dialog. -->
+    <dimen name="letterbox_restart_dialog_corner_radius">28dp</dimen>
+
+    <!-- The fixed width of the dialog if there is enough space in the parent. -->
+    <dimen name="letterbox_restart_dialog_width">348dp</dimen>
+
+    <!-- The width of the top icon in the restart confirmation dialog. -->
+    <dimen name="letterbox_restart_dialog_title_icon_width">32dp</dimen>
+
+    <!-- The height of the top icon in the restart confirmation dialog. -->
+    <dimen name="letterbox_restart_dialog_title_icon_height">32dp</dimen>
+
+    <!-- The width of an icon in the restart confirmation dialog. -->
+    <dimen name="letterbox_restart_dialog_icon_width">40dp</dimen>
+
+    <!-- The height of an icon in the restart confirmation dialog. -->
+    <dimen name="letterbox_restart_dialog_icon_height">32dp</dimen>
+
+    <!-- The space between two actions in the restart confirmation dialog -->
+    <dimen name="letterbox_restart_dialog_space_between_actions">24dp</dimen>
+
+    <!-- The width of the buttons in the restart dialog -->
+    <dimen name="letterbox_restart_dialog_button_width">82dp</dimen>
+
+    <!-- The width of the buttons in the restart dialog -->
+    <dimen name="letterbox_restart_dialog_button_height">36dp</dimen>
+
+    <!-- The corner radius of the buttons in the restart dialog -->
+    <dimen name="letterbox_restart_dialog_button_radius">18dp</dimen>
+
     <!-- The width of the brand image on staring surface. -->
     <dimen name="starting_surface_brand_image_width">200dp</dimen>
 
diff --git a/libs/WindowManager/Shell/res/values/strings.xml b/libs/WindowManager/Shell/res/values/strings.xml
index 25eddf834f3da..250dac6cbaeed 100644
--- a/libs/WindowManager/Shell/res/values/strings.xml
+++ b/libs/WindowManager/Shell/res/values/strings.xml
@@ -188,6 +188,23 @@
     <!-- Accessibility description of the letterbox education toast expand to dialog button. [CHAR LIMIT=NONE] -->
     <string name="letterbox_education_expand_button_description">Expand for more information.</string>
 
+    <!-- The title of the restart confirmation dialog. [CHAR LIMIT=NONE] -->
+    <string name="letterbox_restart_dialog_title">Restart for a better view?</string>
+
+    <!-- The description of the restart confirmation dialog. [CHAR LIMIT=NONE] -->
+    <string name="letterbox_restart_dialog_description">You can restart the app so it looks better on
+        your screen, but you may lose your progress or any unsaved changes
+    </string>
+
+    <!-- Button text for dismissing the restart confirmation dialog. [CHAR LIMIT=20] -->
+    <string name="letterbox_restart_cancel">Cancel</string>
+
+    <!-- Button text for dismissing the restart confirmation dialog. [CHAR LIMIT=20] -->
+    <string name="letterbox_restart_restart">Restart</string>
+
+    <!-- Checkbox text for asking to not show the restart confirmation dialog again. [CHAR LIMIT=NONE] -->
+    <string name="letterbox_restart_dialog_checkbox_title">Don\u2019t show again</string>
+
     <!-- Freeform window caption strings -->
     <!-- Accessibility text for the maximize window button [CHAR LIMIT=NONE] -->
     <string name="maximize_button_text">Maximize</string>
diff --git a/libs/WindowManager/Shell/res/values/styles.xml b/libs/WindowManager/Shell/res/values/styles.xml
index a8597210d72e7..e8f340cdd066b 100644
--- a/libs/WindowManager/Shell/res/values/styles.xml
+++ b/libs/WindowManager/Shell/res/values/styles.xml
@@ -63,4 +63,42 @@
         <item name="android:lineHeight">16sp</item>
         <item name="android:textColor">@color/tv_pip_edu_text</item>
     </style>
+
+    <style name="RestartDialogTitleText">
+        <item name="android:textSize">24sp</item>
+        <item name="android:textColor">?android:attr/textColorPrimary</item>
+        <item name="android:lineSpacingExtra">2sp</item>
+        <item name="android:textAppearance">
+            @*android:style/TextAppearance.DeviceDefault.Headline
+        </item>
+    </style>
+
+    <style name="RestartDialogBodyText">
+        <item name="android:textSize">14sp</item>
+        <item name="android:letterSpacing">0.02</item>
+        <item name="android:textColor">?android:attr/textColorSecondary</item>
+        <item name="android:lineSpacingExtra">2sp</item>
+        <item name="android:textAppearance">
+            @*android:style/TextAppearance.DeviceDefault.Body2
+        </item>
+    </style>
+
+    <style name="RestartDialogCheckboxText">
+        <item name="android:textSize">16sp</item>
+        <item name="android:textColor">?android:attr/textColorPrimary</item>
+        <item name="android:lineSpacingExtra">4sp</item>
+        <item name="android:textAppearance">@*android:style/TextAppearance.DeviceDefault</item>
+    </style>
+
+    <style name="RestartDialogDismissButton">
+        <item name="android:lineSpacingExtra">2sp</item>
+        <item name="android:textSize">14sp</item>
+        <item name="android:textColor">?android:attr/textColorPrimary</item>
+    </style>
+
+    <style name="RestartDialogConfirmButton">
+        <item name="android:lineSpacingExtra">2sp</item>
+        <item name="android:textSize">14sp</item>
+        <item name="android:textColor">?android:attr/textColorPrimaryInverse</item>
+    </style>
 </resources>