Add proguard rule to exclude FirebaseCrashlyticsNdk from obfuscation
com.google.firebase.crashlytics.ndk.FirebaseCrashlyticsNdk contains
public methods accessed via the Crashlytics Unity SDK.
# Prevent FirebaseCrashlytics from being obfuscated, because the Crashlytics
# native libraries call FirebaseCrashlytics public methods dynamically via JNI.
-keep public class com.google.firebase.crashlytics.FirebaseCrashlytics { public *; }
+
+# These FirebaseCrashlyticsNdk classes have APIs accessed via reflection and/or JNI:
+-keep public class com.google.firebase.crashlytics.ndk.FirebaseCrashlyticsNdk { public *; }
-keep public class com.google.firebase.crashlytics.ndk.CrashpadMain { public *; }
-keep public class com.google.firebase.crashlytics.ndk.JniNativeApi { native <methods>; }
