Delete prefix-set if side-effect-free whitelist not enabled.

Delete prefix-set if side-effect-free whitelist not enabled.

The code was correctly deleting the main safe-browsing store in this
case, but left the associated filter file stranded.

BUG=none
R=tburkard@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=278253

[tburkard, 2014-06-18 08:46:46]

lgtm

[Scott Hess - ex-Googler, 2014-06-18 13:27:34]

The CQ bit was checked by shess@chromium.org

[commit-bot: I haz the power, 2014-06-18 13:28:20]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/shess@chromium.org/341553006/1

[Scott Hess - ex-Googler, 2014-06-18 19:52:06]

The CQ bit was unchecked by shess@chromium.org

[Scott Hess - ex-Googler, 2014-06-18 19:52:09]

The CQ bit was checked by shess@chromium.org

[Scott Hess - ex-Googler, 2014-06-18 19:52:32]

On 2014/06/18 19:52:09, shess wrote:
> The CQ bit was checked by mailto:shess@chromium.org

re-starting because the failing bot was lost due to exceptional condition.

[commit-bot: I haz the power, 2014-06-18 19:53:40]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/shess@chromium.org/341553006/1

[Scott Hess - ex-Googler, 2014-06-19 02:42:53]

On 2014/06/18 19:53:40, I haz the power (commit-bot) wrote:
> CQ is trying da patch. Follow status at
>  https://chromium-status.appspot.com/cq/shess@chromium.org/341553006/1

Sigh.  Gonna dcommit.  If you're here because I broke the tree, abject
apologies.

[Scott Hess - ex-Googler, 2014-06-19 02:46:05]

On 2014/06/19 02:42:53, shess wrote:
> On 2014/06/18 19:53:40, I haz the power (commit-bot) wrote:
> > CQ is trying da patch. Follow status at
> >  https://chromium-status.appspot.com/cq/shess@chromium.org/341553006/1
> 
> Sigh.  Gonna dcommit.  If you're here because I broke the tree, abject
> apologies.

Or not.  I'm sure the tree will be open presently.  Sure.

[Scott Hess - ex-Googler, 2014-06-19 03:19:14]

Committed patchset #1 manually as r278253 (presubmit successful).