Bug: http://b/122481018
Upcoming clang update has a clang-tidy warning about using c arrays and
instead use std::array:
warning: do not declare C-style arrays, use std::array<> instead
Disable this warning for now (even before the new clang update lands)
since clang-tidy doesn't complain about flags it doesn't know.
Test: Build with new clang.
Change-Id: I971b84301e6cd1180326bc54711d0be193f09ccb
4b2d55b082