Merge "Update clang-tools build to clang-r468909" am: 2a2efc7cf0 am: cbcf998444

Original change: https://android-review.googlesource.com/c/platform/development/+/2240912

Change-Id: I87de4853f47f1169e46bb93e89184b6fdda0082f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>