Adds DCHECK to BuiltinManifestProvider

Adds DCHECK to BuiltinManifestProvider

If someone adds a resource then it should be in the ResourceBundle.

BUG=none
TEST=none
R=ben@chromium.org

Committed: https://crrev.com/c0983cfb17df5d982784d7db711aa10d83d57ec0
Cr-Commit-Position: refs/heads/master@{#388606}

[Ben Goodger (Google), 2016-04-20 22:30:07]

lgtm

[sky, 2016-04-20 22:39:53]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2016-04-20 22:41:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1905553003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1905553003/20001

[commit-bot: I haz the power, 2016-04-21 00:00:41]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-22 19:27:49]

Description was changed from

==========
Adds DCHECK to BuiltinManifestProvider

If someone adds a resource then it should be in the ResourceBundle.

BUG=none
TEST=none
R=ben@chromium.org
==========

to

==========
Adds DCHECK to BuiltinManifestProvider

If someone adds a resource then it should be in the ResourceBundle.

BUG=none
TEST=none
R=ben@chromium.org

Committed: https://crrev.com/c0983cfb17df5d982784d7db711aa10d83d57ec0
Cr-Commit-Position: refs/heads/master@{#388606}
==========

[commit-bot: I haz the power, 2016-04-22 19:27:50]

Patchset 2 (id:??) landed as
https://crrev.com/c0983cfb17df5d982784d7db711aa10d83d57ec0
Cr-Commit-Position: refs/heads/master@{#388606}