Add priv-app allow-listing for unbundled chooser.

These two permissions are required for the most basic
ChooserActivity flows (as determined by runtime exceptions
during prototyping). Without this allow-listing, the
unbundled chooser's intent resolvers fail to register at
startup, and the device boot-loops.

Among the privileges that might require allow-listing,
these two in particular were sufficient for showing a
basic Chooser UI and launching the user-selected target.
More complex Chooser flows may turn out to require
additional permissions later on.

Test: manual testing as described above, but requires
several local-only changes to exercise the flow, and
this CL has to be the first to go in (but has no
side-effects of its own).

Change-Id: I6a24a46a91199e8b3fb643f047a9b9412b19eb8d

data/etc/Android.bp

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-
 // Sysconfig files
 
 package {
@@ -118,6 +117,13 @@ prebuilt_etc {
     filename_from_src: true,
 }
 
+prebuilt_etc {
+    name: "privapp_whitelist_com.android.intentresolver",
+    sub_dir: "permissions",
+    src: "com.android.intentresolver.xml",
+    filename_from_src: true,
+}
+
 prebuilt_etc {
     name: "privapp_whitelist_com.android.launcher3",
     system_ext_specific: true,

data/etc/com.android.intentresolver.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 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
+  -->
+<permissions>
+    <privapp-permissions package="com.android.intentresolver">
+        <permission name="android.permission.INTERACT_ACROSS_USERS"/>
+        <permission name="android.permission.MANAGE_USERS"/>
+    </privapp-permissions>
+</permissions>