Revert of Suspect that this is causing crash, reverting.

Revert of Suspect that this is causing crash, reverting. (patchset #1 id:1 of https://codereview.chromium.org/708323002/)

Reason for revert:
Suspect cl is innocent.

Original issue's description:
> Suspect that this is causing crash, reverting.
> 
> Revert "Disable notification views when clearing all notifications"
> 
> This reverts commit e38e7b4b295e521e6bdbbacf50ab07fdea842d25.
> 
> BUG=
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/777ddc48181a23562af94c13e57fadebac33e75e

TBR=matthewyuan@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

[myuan, 2014-11-10 17:32:21]

Created Revert of Suspect that this is causing crash, reverting.

[commit-bot: I haz the power, 2014-11-10 17:33:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/711073002/1

[commit-bot: I haz the power, 2014-11-10 17:33:39]

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

[commit-bot: I haz the power, 2014-11-10 17:33:41]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[myuan, 2014-11-10 22:17:39]

On 2014/11/10 17:33:41, I haz the power (commit-bot) wrote:
> No LGTM from a valid reviewer yet. Only full committers are accepted.
> Even if an LGTM may have been provided, it was from a non-committer,
> _not_ a full super star committer.
> See http://www.chromium.org/getting-involved/become-a-committer
> Note that this has nothing to do with OWNERS files.

lgtm

[myuan, 2014-11-10 22:17:47]

The CQ bit was checked by matthewyuan@google.com

[commit-bot: I haz the power, 2014-11-10 22:19:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/711073002/1

[commit-bot: I haz the power, 2014-11-10 22:19:03]

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

[commit-bot: I haz the power, 2014-11-10 22:19:03]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.