support data migration by default

As part of mainline effort, cellbroadcastreceiver package name has been
renamed. Now its a completely new apk with different uid. That said all
user data e.g, cellbroadcast history and user preference from legacy app
com.android.cellbroadcastreceiver are gone. This change is to support
preserve user data when devices upgrating to R and taking cellbroadcast
mainline module.
1. create legacy cellbroadcast app with old pakcage name
com.android.cellbroadcastreceiver. this app only surface the old data
and should not contains any activities/services to handle emergecy apert
2. legacy cellbroadcast app will be included to the system image by
default. OEMs are free to remove it if they don't care data loss or
R data migration is done. leagcy app will not be part of
com.android.cellbroadcast apex.
3. the real mainline module rename to com.android.cellbroadcast.module

Bug: 155844209
Change-Id: I25beb1b76f3231691188de51977ce17f721dcdae

1 files changed, 37 insertions, 0 deletions

diff --git a/legacy/AndroidManifest.xml b/legacy/AndroidManifest.xml
new file mode 100644
index 000000000..33a37444c
--- /dev/null
+++ b/legacy/AndroidManifest.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+ * Copyright (C) 2020 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.
+ */
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.cellbroadcastreceiver"
+    android:versionCode="300000000"
+    android:versionName="R-initial">
+
+  <!-- This "legacy" instance is retained on the device to preserve the
+     database contents before cellbroadcast was migrated into a
+     Mainline module. -->
+    <application
+        android:forceQueryable="true"
+        android:defaultToDeviceProtectedStorage="true"
+        android:directBootAware="true">
+      <provider
+          android:name="LegacyCellBroadcastContentProvider"
+          android:authorities="cellbroadcast-legacy"
+          android:readPermission="android.permission.READ_CELL_BROADCASTS"
+          android:exported="true" />
+    </application>
+</manifest>