<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="default_web_client_id" translatable="false">888XXXXXXXXXX-xXXXXXXXXXXXXXXXXXXXXXXXXX.apps.googleusercontent.com</string>
<string name="firebase_database_url" translatable="false">https://xxxxxb4a.firebaseio.com</string>
<string name="gcm_defaultSenderId" translatable="false">888xxxxxxx</string>
<string name="google_api_key" translatable="false">AIzaxxxxxxxxxxxxxxxxx</string>
<string name="google_app_id" translatable="false">1:88893xxxxxxxx:android:cxxxxxxxba16</string>
<string name="google_crash_reporting_api_key" translatable="false">AIzaxxxxxxxxxxxxxxxxxFF0A</string>
<string name="google_storage_bucket" translatable="false">xxxxx4a.appspot.com</string>
<string name="project_id" translatable="false">xxxxxb4a</string>
</resources>
This is the resource which is Firestore using to get the Applicationid.
The relevant one seems to be this
<string name="google_app_id" translatable="false">1:88893xxxxxxxx:android:cxxxxxxxba16</string>
But, depending on what feature we use, others may be relevant too.
Storage-Bucket for ex. which is only relevant when using Firebase Storage
Or gcm_defaultSenderId which is for sending Pushnotifications