Rename DownloadRetryOperationCode to DownloadRetryResultCode am: 60960ae35c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/AlternativeNetworkAccess/+/19669833

Change-Id: Idb499beaf253bf68779a90e9791697172645f134
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>