Update prebuilt Clang to r349610b.

clang 8.0.9 (based on r349610b) from build 5331180.

Bug: http://b/122481018
Test: N/A
Change-Id: I21bb9f61c287ea9397cf66cc0941f267e3451740
Signed-off-by: Akhil Narang <akhilnarang.1999@gmail.com>
2682 files changed