Remove duplicate plugin header in sources list

pepper/fullscreen_container.h sometimes appeared twice in
the sources list. This confused some other tools so it seems
like a good idea to only have it there once.

Change-Id: I02d88c68c6581eadb171ca5a5d72f75281c52717
Reviewed-on: https://chromium-review.googlesource.com/c/1293455
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#601550}
1 file changed