chromeos: Cleanup class/struct fwd declarations

chromeos: Cleanup class/struct fwd declarations

Remove useless class and struct forward declarations, and add
missing ones in chromeos header files.

BUG=662195
Committed: https://crrev.com/809c7c91f453b4db56431c7097142224c0a669b8
Cr-Commit-Position: refs/heads/master@{#436338}

[jbriance, 2016-12-05 08:57:02]

jbriance@cisco.com changed reviewers:
+ stevenjb@chromium.org

[stevenjb, 2016-12-05 16:39:17]

lgtm

[jbriance, 2016-12-05 16:40:33]

The CQ bit was checked by jbriance@cisco.com to run a CQ dry run

[commit-bot: I haz the power, 2016-12-05 16:40:49]

Dry run: 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, 2016-12-05 17:21:50]

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

[commit-bot: I haz the power, 2016-12-05 17:21:50]

Dry run: This issue passed the CQ dry run.

[jbriance, 2016-12-05 17:23:38]

The CQ bit was checked by jbriance@cisco.com

[commit-bot: I haz the power, 2016-12-05 17:24:03]

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, 2016-12-05 17:44:56]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1480958618847340, "parent_rev":
"72177ae184735c3dccb93f1b507727d3e76cd7c3", "commit_rev":
"c25492b03dd86cdcde58844b42ca233790769338"}

[commit-bot: I haz the power, 2016-12-05 17:45:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-05 17:48:03]

Description was changed from

==========
chromeos: Cleanup class/struct fwd declarations

Remove useless class and struct forward declarations, and add
missing ones in chromeos header files.

BUG=662195
==========

to

==========
chromeos: Cleanup class/struct fwd declarations

Remove useless class and struct forward declarations, and add
missing ones in chromeos header files.

BUG=662195

Committed: https://crrev.com/809c7c91f453b4db56431c7097142224c0a669b8
Cr-Commit-Position: refs/heads/master@{#436338}
==========

[commit-bot: I haz the power, 2016-12-05 17:48:04]

Patchset 1 (id:??) landed as
https://crrev.com/809c7c91f453b4db56431c7097142224c0a669b8
Cr-Commit-Position: refs/heads/master@{#436338}