Add -Wshorten-64-to-32 flag to mac builds.

Add -Wshorten-64-to-32 flag to mac builds.

BUG=

Committed: https://crrev.com/30b39f25fc00e8aaba13a7ef911201cd6cb3fe73
Cr-Commit-Position: refs/heads/master@{#29652}

[balazs.kilvady, 2015-07-14 12:04:14]

balazs.kilvady@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, danno@chromium.org, dusan.milosavljevic@imgtec.com,
jkummerow@chromium.org, machenbach@chromium.org, paul.lind@imgtec.com,
svenpanne@chromium.org

[balazs.kilvady, 2015-07-14 12:12:44]

We would like to use Xcode/mac for development. V8-team reviewers, please take a
look. These changes have got lgtm in
https://codereview.chromium.org/1133163005/#ps160001
but were reverted because of a mac bot failure (with gdbjit support). Now all
the mac (and other) trybots got green.

[balazs.kilvady, 2015-07-14 12:13:03]

The CQ bit was checked by balazs.kilvady@imgtec.com to run a CQ dry run

[commit-bot: I haz the power, 2015-07-14 12:13:08]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1237753004/1

[commit-bot: I haz the power, 2015-07-14 12:40:41]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-14 12:40:42]

Dry run: This issue passed the CQ dry run.

[Michael Achenbach, 2015-07-14 13:14:28]

lgtm

[Jakob Kummerow, 2015-07-14 13:16:09]

LGTM

https://codereview.chromium.org/1237753004/diff/1/build/standalone.gypi
File build/standalone.gypi (right):

https://codereview.chromium.org/1237753004/diff/1/build/standalone.gypi#newco...
build/standalone.gypi:795: ]
nit: trailing ',' for consistency

[balazs.kilvady, 2015-07-14 15:42:44]

Also clang formatted.

https://codereview.chromium.org/1237753004/diff/1/build/standalone.gypi
File build/standalone.gypi (right):

https://codereview.chromium.org/1237753004/diff/1/build/standalone.gypi#newco...
build/standalone.gypi:795: ]
On 2015/07/14 13:16:09, Jakob wrote:
> nit: trailing ',' for consistency

Done.

[balazs.kilvady, 2015-07-14 15:42:50]

The CQ bit was checked by balazs.kilvady@imgtec.com

[balazs.kilvady, 2015-07-14 15:42:50]

The patchset sent to the CQ was uploaded after l-g-t-m from
machenbach@chromium.org, jkummerow@chromium.org
Link to the patchset: https://codereview.chromium.org/1237753004/#ps20001
(title: "Fix nit, clang formatted.")

[commit-bot: I haz the power, 2015-07-14 15:43:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1237753004/20001

[commit-bot: I haz the power, 2015-07-14 16:05:25]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-14 16:05:46]

Patchset 2 (id:??) landed as
https://crrev.com/30b39f25fc00e8aaba13a7ef911201cd6cb3fe73
Cr-Commit-Position: refs/heads/master@{#29652}