[chromium-freeworld/el7] (10 commits) ...Merge Fedora, 60.0.3112.113-2

Summary of changes: b413a74... Another player has entered the game: aarch64! (*) c74ab79... add BR: ninja-build (*) 984bf67... update to 60.0.3112.113, fix ffmpeg clean script to not del (*) 761a028... fixed sources (*) 7d1f0ea... fixed sources for aarch64 (*) 321d5de... fix include pathing in libavutil/timer.h (*) 21e3607... more aarch64 ffmpeg files (*) b3500bb... Merge Fedora, chromium-60.0.3112.113-1 (*) a546230... disable aarch64 on rhel7, missing libatomic.so for some rea (*) 2843feb... Merge Fedora, 60.0.3112.113-2 (*) (*) This commit already existed in another branch; no separate mail sent