Add shared mutexes to the direct write cache code to get better parallelism.

Add shared mutexes to the direct write cache code to get better parallelism.

BUG=547182
Committed: https://skia.googlesource.com/skia/+/6440f0b09ede274f93131eebb3ef49e73dfb2b9c

[herb_g, 2015-10-27 19:47:59]

Description was changed from

==========
Add shared mutexes to the direct write cache code to get better parallelism.

BUG=skia:
==========

to

==========
Add shared mutexes to the direct write cache code to get better parallelism.

BUG=547182
==========

[herb_g, 2015-10-27 19:47:59]

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

[herb_g, 2015-10-27 19:49:52]

The CQ bit was checked by herb@google.com to run a CQ dry run

[commit-bot: I haz the power, 2015-10-27 19:49:58]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1424093002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1424093002/1

[commit-bot: I haz the power, 2015-10-27 20:01:06]

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

[commit-bot: I haz the power, 2015-10-27 20:01:06]

Dry run: This issue passed the CQ dry run.

[mtklein, 2015-10-27 20:28:46]

lgtm

[mtklein, 2015-10-27 20:29:42]

https://codereview.chromium.org/1424093002/diff/1/src/ports/SkScalerContext_w...
File src/ports/SkScalerContext_win_dw.cpp (right):

https://codereview.chromium.org/1424093002/diff/1/src/ports/SkScalerContext_w...
src/ports/SkScalerContext_win_dw.cpp:435: Shared l2(DWriteFactoryMutex);
Shared l(...) ?

[bungeman-skia, 2015-10-27 20:39:32]

Other than the 'l2', lgtm.

[herb_g, 2015-10-27 21:26:14]

Fixed the l2 issue.

[herb_g, 2015-10-27 21:26:27]

The CQ bit was checked by herb@google.com

[herb_g, 2015-10-27 21:26:27]

The patchset sent to the CQ was uploaded after l-g-t-m from bungeman@google.com,
mtklein@google.com
Link to the patchset: https://codereview.chromium.org/1424093002/#ps20001
(title: "Fix l2")

[commit-bot: I haz the power, 2015-10-27 21:26:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1424093002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1424093002/20001

[commit-bot: I haz the power, 2015-10-27 21:37:03]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/6440f0b09ede274f93131eebb3ef49e73dfb2b9c