Add SeedvaultOverlay RRO to reduce ASOP integretion steps

Android.bp

@@ -44,7 +44,8 @@ android_app {
     required: [
         "LocalContactsBackup",
         "privapp_whitelist_com.stevesoltys.backup",
-        "com.stevesoltys.backup_whitelist"
+        "com.stevesoltys.backup_whitelist",
+        "SeedvaultOverlay",
     ],
     optimize: {
         enabled: false,

README.md

@@ -15,10 +15,6 @@ A backup application for the [Android Open Source Project](https://source.androi
 
 For older versions of Android, check out [the branches](https://github.com/stevesoltys/seedvault/branches).
 
-## Getting Started
-- Check out [the wiki](https://github.com/stevesoltys/seedvault/wiki) for information on building the application with 
-AOSP.
-
 ## What makes this different?
 This application is compiled with the operating system and does not require a rooted device for use.
 It uses the same internal APIs as `adb backup` which is deprecated and thus needs a replacement.
@@ -43,5 +39,15 @@ The [Seedvault backup parser](https://github.com/tlambertz/seedvault_backup_pars
 allows you to decrypt and inspect your backups.
 It can also re-encrypt them.
 
+## AOSP build
+
+To build in AOSP, add
+```
+	<remote name="seedvault-github" fetch="https://github.com/seedvault-app/" />
+    <project path="vendor/seedvault" name="seedvault" remote="seedvault-github" revision="master" />
+```
+to your manifest.xml
+And add `PRODUCT_PACKAGES += Seedvault` in your device.mk
+
 ## License
 This application is available as open source under the terms of the [Apache-2.0 License](https://opensource.org/licenses/Apache-2.0).

overlay/Android.bp

@@ -0,0 +1,4 @@
+runtime_resource_overlay {
+    name: "SeedvaultOverlay",
+    product_specific: true
+}

overlay/AndroidManifest.xml

@@ -0,0 +1,8 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+        package="com.stevesoltys.seedvault.framework_rro"
+        android:versionCode="1"
+        android:versionName="1.0">
+        <overlay android:targetPackage="com.android.providers.settings"
+            android:priority="947"
+            android:isStatic="true" />
+</manifest>

overlay/res/values/config.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<resources>
+    <bool name="def_backup_enabled">true</bool>
+    <string name="def_backup_transport" translatable="false">com.stevesoltys.seedvault.transport.ConfigurableBackupTransport</string>
+</resources>