Speculatively clobber Mac after "Switch Mac Intel GPU bots to 10.12 from 10.10"

Speculatively clobber Mac after "Switch Mac Intel GPU bots to 10.12 from 10.10"

Something in this range broke the Mac builder:
https://chromium.googlesource.com/chromium/src/+log/c6e4c6f1f9865b5a77d2cc4eb8c7104b632624f1%5E..1a7740c44a6c4d03423c4b5ff7d746e1a1b7363e?pretty=fuller

r442828 is the most obvious candidate which may have affected builds.

BUG=679607
TBR=kbr@chromium.org

Review-Url: https://codereview.chromium.org/2626993002 .
Cr-Commit-Position: refs/heads/master@{#442832}
Committed: https://chromium.googlesource.com/chromium/src/+/117c52b0a0add3b82ca354e6a2d3dd2be54abc25

[foolip, 2017-01-11 09:26:29]

Description was changed from

==========
Speculatively clobber Mac after "Switch Mac Intel GPU bots to 10.12 from 10.10"

Something in this range broke the Mac builder:
https://chromium.googlesource.com/chromium/src/+log/c6e4c6f1f9865b5a77d2cc4eb...

r442828 is the most obvious candidate which may have affected builds.

BUG=679607
TBR=kbr@chromium.org
==========

to

==========
Speculatively clobber Mac after "Switch Mac Intel GPU bots to 10.12 from 10.10"

Something in this range broke the Mac builder:
https://chromium.googlesource.com/chromium/src/+log/c6e4c6f1f9865b5a77d2cc4eb...

r442828 is the most obvious candidate which may have affected builds.

BUG=679607
TBR=kbr@chromium.org

Review-Url: https://codereview.chromium.org/2626993002 .
Cr-Commit-Position: refs/heads/master@{#442832}
Committed:
https://chromium.googlesource.com/chromium/src/+/117c52b0a0add3b82ca354e6a2d3...
==========

[foolip, 2017-01-11 09:26:31]

Committed patchset #1 (id:1) manually as
117c52b0a0add3b82ca354e6a2d3dd2be54abc25 (tree was closed).

[Nico, 2017-03-02 18:27:46]

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

[Nico, 2017-03-02 18:27:46]

https://codereview.chromium.org/2626993002/diff/1/build/get_landmines.py
File build/get_landmines.py (right):

https://codereview.chromium.org/2626993002/diff/1/build/get_landmines.py#newc...
build/get_landmines.py:26: # DO NOT add landmines as part of a regular CL.
Landmines are a last-effort
have you seen this comment? was there an investigation for the root cause for
why this clobber was necessary? why wasn't this reviewed?