Update the updating_clang document to include copying the translation_unit tool

Update the updating_clang document to include copying the translation_unit tool

BUG=724686
Review-Url: https://codereview.chromium.org/2909373002
Cr-Commit-Position: refs/heads/master@{#475651}
Committed: https://chromium.googlesource.com/chromium/src/+/6c96037e35179fdafa339ee44411c018702d82eb

[hans, 2017-05-30 19:40:34]

hans@chromium.org changed reviewers:
+ thakis@chromium.org

[hans, 2017-05-30 19:40:34]

Please take a look.

[Nico, 2017-05-30 19:50:05]

lgtm :-/

[hans, 2017-05-30 19:53:03]

The CQ bit was checked by hans@chromium.org

[commit-bot: I haz the power, 2017-05-30 19:53:42]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-30 20:17:47]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1496173983038030, "parent_rev":
"64b2d8e9fedef8add46fef50558ebb0cca831232", "commit_rev":
"6c96037e35179fdafa339ee44411c018702d82eb"}

[commit-bot: I haz the power, 2017-05-30 20:17:55]

Description was changed from

==========
Update the updating_clang document to include copying the translation_unit tool

BUG=724686
==========

to

==========
Update the updating_clang document to include copying the translation_unit tool

BUG=724686

Review-Url: https://codereview.chromium.org/2909373002
Cr-Commit-Position: refs/heads/master@{#475651}
Committed:
https://chromium.googlesource.com/chromium/src/+/6c96037e35179fdafa339ee44411...
==========

[commit-bot: I haz the power, 2017-05-30 20:17:55]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6c96037e35179fdafa339ee44411...