Remove a pointless use of SkWeakRefCnt.

Remove a pointless use of SkWeakRefCnt.

Can't quite get rid of SkWeakRefCnt yet... SkFontMgr_indirect uses it to cache
SkTypefaces, and I don't quite understand it enough yet to cut out the weak refs.

BUG=skia:3065
Committed: https://skia.googlesource.com/skia/+/60b6e9dbbc492f987a5b887dff60aec107ab70d0

[mtklein, 2014-10-24 15:16:05]

mtklein@google.com changed reviewers:
+ bungeman@google.com, mtklein@google.com

[mtklein, 2014-10-24 15:16:09]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-10-24 15:16:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/664173003/1

[commit-bot: I haz the power, 2014-10-24 15:16:51]

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 2014-10-24 21:16 UTC

[commit-bot: I haz the power, 2014-10-24 15:18:14]

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

[commit-bot: I haz the power, 2014-10-24 15:18:16]

Try jobs failed on following builders:
  Test-Ubuntu13.10-GCE-NoGPU-x86_64-Debug-Trybot on client.skia
(http://build.chromium.org/p/client.skia/builders/Test-Ubuntu13.10-GCE-NoGPU-x...)
  Test-Ubuntu13.10-GCE-NoGPU-x86_64-Release-Shared-Trybot on client.skia
(http://build.chromium.org/p/client.skia/builders/Test-Ubuntu13.10-GCE-NoGPU-x...)

[mtklein, 2014-10-24 15:19:55]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-10-24 15:20:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/664173003/20001

[commit-bot: I haz the power, 2014-10-24 15:20:54]

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 2014-10-24 21:20 UTC

[bungeman-skia, 2014-10-24 15:51:54]

lgtm

[commit-bot: I haz the power, 2014-10-24 17:14:50]

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

[commit-bot: I haz the power, 2014-10-24 17:14:51]

Try jobs failed on following builders:
  Build-Win-VS2013-x86-Debug-Trybot on client.skia.compile
(http://build.chromium.org/p/client.skia.compile/builders/Build-Win-VS2013-x86...)

[mtklein, 2014-10-24 17:33:57]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-10-24 17:34:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/664173003/40001

[commit-bot: I haz the power, 2014-10-24 17:43:28]

Committed patchset #3 (id:40001) as 60b6e9dbbc492f987a5b887dff60aec107ab70d0