Semi-automatically taking the the misc-include-cleaner warnings by clang-tidy and fixing files to be self-contained. Change-Id: Iaaa2b2ec9d6dcce547fa5cb6b4f056dfc8c781ff
`bool mux` -> `use_mux_api` to avoid conflicting with WebPMux variable. Bug: webp:380121350 Change-Id: Ie3f8176efc296fae804c36ee0b27bf8e3034c6e8
Change-Id: I75afb65058690585bbf2671c27d6a99a87bcaab7