Revert of Revert of SK_DEBUG when DCHECK_ALWAYS_ON

Revert of Revert of SK_DEBUG when DCHECK_ALWAYS_ON (patchset #1 id:1 of https://codereview.chromium.org/965113002/)

Reason for revert:
Revert did not help, restoring original patch

Original issue's description:
> Revert of SK_DEBUG when DCHECK_ALWAYS_ON (patchset #1 id:1 of https://codereview.chromium.org/966593002/)
>
> Reason for revert:
> May have caused FontRenderParamsTest failures on Linux debug bots.
>
> Original issue's description:
> > SK_DEBUG when DCHECK_ALWAYS_ON
> >
> > BUG=
> >
> > Committed: https://crrev.com/879405ae813ae4a9bcbd7684d3551420d4980383
> > Cr-Commit-Position: refs/heads/master@{#318557}
>
> TBR=jam@chromium.org,mtklein@google.com,mtklein@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/6197d8798bb0282d42b69c535b17bd2cd92c3b38
> Cr-Commit-Position: refs/heads/master@{#318581}

TBR=jam@chromium.org,mtklein@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/d3cea3c54f0025f0d3d06fca853f1999b29835b5
Cr-Commit-Position: refs/heads/master@{#318600}

[eroman, 2015-02-28 05:19:55]

Created Revert of Revert of SK_DEBUG when DCHECK_ALWAYS_ON

[commit-bot: I haz the power, 2015-02-28 05:20:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/963423003/1

[commit-bot: I haz the power, 2015-02-28 05:21:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-28 05:21:52]

Patchset 1 (id:??) landed as
https://crrev.com/d3cea3c54f0025f0d3d06fca853f1999b29835b5
Cr-Commit-Position: refs/heads/master@{#318600}