small cleanup of GrAtlas

small cleanup of GrAtlas

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/d706f11b6e3f4398ab93b23458a7599ee324be2c

Committed: https://skia.googlesource.com/skia/+/8debd89f6360dbf4b19c17e32bb0328bd7a08576

[joshualitt, 2015-05-19 21:23:27]

joshualitt@google.com changed reviewers:
+ joshualitt@google.com, robertphillips@google.com

[joshualitt, 2015-05-19 21:23:28]

ptal

[joshualitt, 2015-05-19 21:23:33]

The CQ bit was checked by joshualitt@google.com

[commit-bot: I haz the power, 2015-05-19 21:24:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1142263002/20001

[commit-bot: I haz the power, 2015-05-19 21:24:03]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2015-05-20 03:24 UTC

[robertphillips, 2015-05-19 21:30:02]

robertphillips@google.com changed reviewers:
+ jvanverth@google.com

[robertphillips, 2015-05-19 21:30:03]

okay with me but I would like Jim to chime in too

[jvanverth1, 2015-05-19 21:39:11]

lgtm

[commit-bot: I haz the power, 2015-05-19 21:41:50]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/d706f11b6e3f4398ab93b23458a7599ee324be2c

[bungeman-skia, 2015-05-19 21:44:35]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/1142273002/ by bungeman@google.com.

The reason for reverting is: Broke compile on Linux.

[bungeman-skia, 2015-05-19 21:47:28]

On 2015/05/19 21:44:35, bungeman1 wrote:
> A revert of this CL (patchset #2 id:20001) has been created in
> https://codereview.chromium.org/1142273002/ by mailto:bungeman@google.com.
> 
> The reason for reverting is: Broke compile on Linux.

Actually, this broke all the platforms, not just Linux. Perhaps this passed due
to a race, and another change landed first?

[joshualitt, 2015-05-19 21:53:01]

The CQ bit was checked by joshualitt@google.com

[joshualitt, 2015-05-19 21:53:02]

The patchset sent to the CQ was uploaded after l-g-t-m from jvanverth@google.com
Link to the patchset: https://codereview.chromium.org/1142263002/#ps40001
(title: "tidy")

[commit-bot: I haz the power, 2015-05-19 21:53:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1142263002/40001

[commit-bot: I haz the power, 2015-05-19 22:05:30]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/8debd89f6360dbf4b19c17e32bb0328bd7a08576