Add a note that landmines should not be used in general.

Add a note that landmines should not be used in general.

BUG=none

Committed: https://crrev.com/37066a5a215e8c8e85958e7b1c7756b201b17c5c
Cr-Commit-Position: refs/heads/master@{#321824}

[Nico, 2015-03-23 16:41:36]

thakis@chromium.org changed reviewers:
+ iannucci@chromium.org, jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-03-23 16:43:12]

lgtm

[Nico, 2015-03-23 18:01:37]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-03-23 18:01:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1009603006/1

[iannucci, 2015-03-23 18:09:06]

On 2015/03/23 18:01:54, I haz the power (commit-bot) wrote:
> CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1009603006/1

Yay! So glad that we're zeroing in on having this be fixed the right way :) lgtm

Do you know if something is also cleaning up renamed binaries these days, too?
Or are we still missing out-deps on some important files (used to be pdbs and
some other things, but I think that's fixed now?)

Also may want to put a derprication warning here too:
http://www.chromium.org/Home/chromium-clobber-landmines

Should this warning be tempered per-platform, or are the dependencies now
perfect on all the platforms?

(really excited about this :))

[jochen (gone - plz use gerrit), 2015-03-23 18:12:15]

I guess this was triggered by https://codereview.chromium.org/1007423004

Comments on that issue welcome

[iannucci, 2015-03-23 18:14:37]

On 2015/03/23 18:12:15, jochen (slow) wrote:
> I guess this was triggered by https://codereview.chromium.org/1007423004
> 
> Comments on that issue welcome

Ah... Hm... actually that's a good question... what IS the right way to do that?
Is the hash-of-the binary in the rule used to key ninja's deletion of the output
files?

[Nico, 2015-03-23 18:15:50]

On 2015/03/23 18:12:15, jochen (slow) wrote:
> I guess this was triggered by https://codereview.chromium.org/1007423004

This comes up every now and then, not just that issue. Maybe it'll come up less
frequently now.

[commit-bot: I haz the power, 2015-03-23 18:58:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-23 18:58:34]

Patchset 1 (id:??) landed as
https://crrev.com/37066a5a215e8c8e85958e7b1c7756b201b17c5c
Cr-Commit-Position: refs/heads/master@{#321824}