Remove inline variable creation with instanceof

This is not support by the protolog tool. Which means none of the
protologs in this file work.
Moving back to the old format of creating the variable separately.

Bug: 329326194
Test: m SystemUITitan, enable bubbles protolog to logcat, check that
  logs are in logcat
Change-Id: Ifb12353ee6837cf4c28063b2ff5b94ca5f97f5a2