Remove /fallback flag from 32-bit clang-cl invocations and enable -Werror

Remove /fallback flag from 32-bit clang-cl invocations and enable -Werror

Clang can now compile all of Chromium in 32-bit as well as 64-bit without warnings.

R=thakis@chromium.org
BUG=82385
Committed: https://crrev.com/b5d0897658e728ea186c057ec414d53176913b2f
Cr-Commit-Position: refs/heads/master@{#339178}

[Nico, 2015-07-14 17:52:06]

We need to land that roll first.

[Nico, 2015-07-14 17:54:08]

(if you feel like it, `git cl patch -b rollclang 1234713002`, then change the
revision in tools\clang\scripts\update.py to 242158 to pick up espindola's test
flake fix, and run `python tools\clang\scripts\package.py`. If we're lucky,
you'll end up with a clang package in under one hour.)

[chromium-reviews, 2015-07-14 18:17:59]

Cool, I'm running it.

On Tue, Jul 14, 2015 at 10:54 AM, <thakis@chromium.org> wrote:

> (if you feel like it, `git cl patch -b rollclang 1234713002`, then change
> the
> revision in tools\clang\scripts\update.py to 242158 to pick up espindola's
> test
> flake fix, and run `python tools\clang\scripts\package.py`. If we're lucky,
> you'll end up with a clang package in under one hour.)
>
> https://codereview.chromium.org/1235033008/
>

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[Reid Kleckner, 2015-07-15 15:20:05]

Can this land since https://codereview.chromium.org/1235033008/ landed, or do we
want to wait to make sure it sticks?

[Nico, 2015-07-15 16:08:04]

lgtm, ship it!

(your link links to this CL; I guess you meant
https://codereview.chromium.org/1234713002 :-) )

[Reid Kleckner, 2015-07-15 16:13:35]

The CQ bit was checked by rnk@chromium.org

[commit-bot: I haz the power, 2015-07-15 16:13:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1235033008/1

[Reid Kleckner, 2015-07-15 18:03:57]

The CQ bit was unchecked by rnk@chromium.org

[Nico, 2015-07-16 22:44:32]

The CQ bit was checked by thakis@chromium.org

[Nico, 2015-07-16 22:44:45]

woob woob
http://build.chromium.org/p/chromium.fyi/builders/CrWinClang%20tester/builds/...

[commit-bot: I haz the power, 2015-07-16 22:47:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1235033008/1

[commit-bot: I haz the power, 2015-07-17 00:00:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-17 00:00:57]

Patchset 1 (id:??) landed as
https://crrev.com/b5d0897658e728ea186c057ec414d53176913b2f
Cr-Commit-Position: refs/heads/master@{#339178}