Add compatibility change preference

Add UI for modifying the compatibility change overrides per-app.

Test: make RunSettingsRoboTests ROBOTEST_FILTER=PlatformCompatDashboardTest
Bug: 138280620
Change-Id: I07c7602e7a439e47b0b1fa59b047231afbbc0ab6

res/xml/development_settings.xml

@@ -226,6 +226,13 @@
             android:fragment="com.android.settings.development.gamedriver.GameDriverDashboard"
             settings:searchable="false" />
 
+        <Preference
+            android:key="platform_compat_dashboard"
+            android:title="@string/platform_compat_dashboard_title"
+            android:summary="@string/platform_compat_dashboard_summary"
+            android:fragment="com.android.settings.development.compat.PlatformCompatDashboard"
+            />
+
     </PreferenceCategory>
 
     <PreferenceCategory

res/xml/platform_compat_settings.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2019 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.
+  -->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"
+    android:key="platform_compat_dashboard"
+    android:title="@string/platform_compat_dashboard_title">
+</PreferenceScreen>