Fix -Wshorten-64-to-32 errors on clang ARM64

Fix -Wshorten-64-to-32 errors on clang ARM64

Committed: https://crrev.com/3b49b45756f3ec1cadb2428fa2dea3859c0cb678
Cr-Commit-Position: refs/heads/master@{#40940}

[ynovikov, 2016-11-10 22:12:25]

ynovikov@chromium.org changed reviewers:
+ rmcilroy@chromium.org

[rmcilroy, 2016-11-11 11:37:43]

lgtm

[ynovikov, 2016-11-11 19:52:39]

The CQ bit was checked by ynovikov@chromium.org

[commit-bot: I haz the power, 2016-11-11 19:52:51]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-11 20:19:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-17 22:31:22]

Description was changed from

==========
Fix -Wshorten-64-to-32 errors on clang ARM64
==========

to

==========
Fix -Wshorten-64-to-32 errors on clang ARM64

Committed: https://crrev.com/3b49b45756f3ec1cadb2428fa2dea3859c0cb678
Cr-Commit-Position: refs/heads/master@{#40940}
==========

[commit-bot: I haz the power, 2016-11-17 22:31:23]

Patchset 1 (id:??) landed as
https://crrev.com/3b49b45756f3ec1cadb2428fa2dea3859c0cb678
Cr-Commit-Position: refs/heads/master@{#40940}