Revert "Update clang version to clang-r487747"

Revert submission 2462733-fix-clang-tools-r487747

Rollback compiler update

Reverted changes: /q/submissionid:2462733-fix-clang-tools-r487747

Change-Id: I728d075c70c1a9938475069643c62a2cdf2a968f
5 files changed