am f985e9e6: am a09489c0: Merge "Update proguard config to keep base Preference class" into mnc-ub-dev
am f985e9e6: am a09489c0: Merge "Update proguard config to keep base Preference class" into mnc-ub-dev

* commit 'f985e9e6c68fa59aeed0dd73d7487e18c636ad8b':
  Update proguard config to keep base Preference class

androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,androidx/androidx,aosp-mirror/platform_frameworks_support,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,aosp-mirror/platform_frameworks_support,aosp-mirror/platform_frameworks_support,aosp-mirror/platform_frameworks_support,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx