Add comments for struct members that were changed from size_t to uin32_t or uint64_t for IPC safety.

Add comments for struct members that were changed from size_t to uin32_t or uint64_t for IPC safety.

Also add a few checked_cast for places where we converted from size_t and we're sure that it's safe.

BUG=581409
Committed: https://crrev.com/ffaec53850a27fc0888998c98c7bb092ccbd8552
Cr-Commit-Position: refs/heads/master@{#374788}

[jam, 2016-02-10 18:27:57]

jam@chromium.org changed reviewers:
+ tsepez@chromium.org

[Tom Sepez, 2016-02-10 20:51:46]

Thanks. LGTM.

[jam, 2016-02-10 21:40:22]

The CQ bit was checked by jam@chromium.org

[commit-bot: I haz the power, 2016-02-10 21:42:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1684793003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1684793003/1

[commit-bot: I haz the power, 2016-02-10 23:45:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-16 22:32:45]

Description was changed from

==========
Add comments for struct members that were changed from size_t to uin32_t or
uint64_t for IPC safety.

Also add a few checked_cast for places where we converted from size_t and we're
sure that it's safe.

BUG=581409
==========

to

==========
Add comments for struct members that were changed from size_t to uin32_t or
uint64_t for IPC safety.

Also add a few checked_cast for places where we converted from size_t and we're
sure that it's safe.

BUG=581409

Committed: https://crrev.com/ffaec53850a27fc0888998c98c7bb092ccbd8552
Cr-Commit-Position: refs/heads/master@{#374788}
==========

[commit-bot: I haz the power, 2016-02-16 22:32:46]

Patchset 1 (id:??) landed as
https://crrev.com/ffaec53850a27fc0888998c98c7bb092ccbd8552
Cr-Commit-Position: refs/heads/master@{#374788}