Fix ArcVideoService compile error

This CL fixes ArcVideoService to include
components/arc/common/video.mojom.h instead of video.mojom.h. Direct
include to video.mojom.h is deprecated after ag/3559847.

Bug: 73146261
Test: Compiled.
Change-Id: I8a3275bcdbfd73646a8aa94c5ef4e44c7fd458db