Build: Don't pass /GL to Clang on Windows

Build: Don't pass /GL to Clang on Windows

Windows Clang's support for LTO isn't ready to take on Chrome yet.

BUG=82385
R=thakis@chromium.org
TBR=scottmg

Committed: https://chromium.googlesource.com/chromium/src/+/4e76e7926ee51bdfdd635437920f455ae6444912

[hans, 2015-06-13 01:08:48]

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

[hans, 2015-06-13 01:08:49]

This should fix http://build.chromium.org/p/chromium.fyi/builders/CrWinClang

Please take a look.

[Nico, 2015-06-13 01:54:34]

lgtm to get the build green, but /GL shouldn't enable -flto as it's always going
to cause this problem. (Maybe you can add a "TODO: remove once clang is no
longer silly" or similar)

(I thought about saying this when I saw pcc's commit go by, but none of the bots
went red. I didn't realize we didn't have any buildtype=Official tot bots.)

[Nico, 2015-06-13 02:00:59]

(I left a comment on the r239213 clang commit)

[hans, 2015-06-13 03:04:25]

On 2015/06/13 01:54:34, Nico (afk vacation Fri Jun 12) wrote:
> lgtm to get the build green, but /GL shouldn't enable -flto as it's always
going
> to cause this problem. (Maybe you can add a "TODO: remove once clang is no
> longer silly" or similar)
> 
> (I thought about saying this when I saw pcc's commit go by, but none of the
bots
> went red. I didn't realize we didn't have any buildtype=Official tot bots.)

pcc's patch was reverted in r239656. I'll land this to get the bots green in the
meantime. Added a TODO too.

[hans, 2015-06-13 03:04:49]

The CQ bit was checked by hans@chromium.org

[hans, 2015-06-13 03:04:49]

The patchset sent to the CQ was uploaded after l-g-t-m from thakis@chromium.org
Link to the patchset: https://codereview.chromium.org/1186743002/#ps40001
(title: "Add TODO")

[commit-bot: I haz the power, 2015-06-13 03:05:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1186743002/40001

[hans, 2015-06-13 03:35:52]

Committed patchset #3 (id:40001) manually as
4e76e7926ee51bdfdd635437920f455ae6444912 (presubmit successful).

[Nico, 2015-06-15 18:24:30]

A revert of this CL (patchset #3 id:40001) has been created in
https://codereview.chromium.org/1185133004/ by thakis@chromium.org.

The reason for reverting is: Broke some official builds
(http://crbug.com/500393). Will roll clang forward instead..