Revert "Clearly distinguish ProtoLog hash vs message interface"

Revert submission 28147757-no-processing-protolog

Reason for revert: b/351458758

Reverted changes: /q/submissionid:28147757-no-processing-protolog
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:8f5da09abd22488a8557f0b632913a5e33c5eb41)
Merged-In: If80d73c9351ed98b2890a8a7090b7310f6f24fa2
Change-Id: If80d73c9351ed98b2890a8a7090b7310f6f24fa2
4 files changed