Update traffic annotation extractor.

Traffic annotation extractor clang tool is updated to return the
expansion path of the macros for returned elements.

Bug: 690323
Change-Id: I2fe33a42bfcbf0e19bcbf798ecb7a9690e53d020
Reviewed-on: https://chromium-review.googlesource.com/1023399
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#553028}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 1621e54dd424f9ac217591fd69fc9bf91d1c30e7
3 files changed