Apply automatic range checks to content enum types across IPC.

Apply automatic range checks to content enum types across IPC.

This is part of a long-running background task to remove the remaining
uses of the unchecked IPC_ENUM_TRAITS() macro.

BUG=246708
Committed: https://crrev.com/ef612ee574ecdff8d6d691f613cd6dac033db85c
Cr-Commit-Position: refs/heads/master@{#298853}

[anujsharma, 2014-10-08 14:50:55]

anujk.sharma@samsung.com changed reviewers:
+ jochen@chromium.org, nasko@chromium.org

[anujsharma, 2014-10-08 14:50:55]

nasko@chromium.org: Please review changes in for message change

jochen@chromium.org: Please review changes in chrome/common 
module

[nasko, 2014-10-08 15:13:38]

The CQ bit was checked by nasko@chromium.org

[nasko, 2014-10-08 15:13:46]

The CQ bit was unchecked by nasko@chromium.org

[nasko, 2014-10-08 15:13:54]

lgtm.

[jochen (gone - plz use gerrit), 2014-10-09 11:22:04]

lgtm

[anujsharma, 2014-10-09 11:23:50]

On 2014/10/09 11:22:04, jochen wrote:
> lgtm

Thanks nasko and jochen for lgtm.

[anujsharma, 2014-10-09 11:23:57]

The CQ bit was checked by anujk.sharma@samsung.com

[commit-bot: I haz the power, 2014-10-09 11:24:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/638013002/1

[commit-bot: I haz the power, 2014-10-09 12:16:37]

Committed patchset #1 (id:1) as 1925226d7a96173acd39952beccbb3bec9e57e9f

[commit-bot: I haz the power, 2014-10-09 12:17:29]

Patchset 1 (id:??) landed as
https://crrev.com/ef612ee574ecdff8d6d691f613cd6dac033db85c
Cr-Commit-Position: refs/heads/master@{#298853}