Use new skia resource clearing API

Use new skia resource clearing API

This will clear most of the same data as the previous approach, but will
preserver the glyph cache. Thrashing of the glyph cache appears to be
a major source of jank, so hopefully this will improve performance.

BUG=656320
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

[ericrk, 2017-05-12 21:38:00]

Description was changed from

==========
Use new skia resource clearing API

This will clear most of the same data as the previous approach, but will
preserver the glyph cache. Thrashing of the glyph cache appears to be
a major source of jank, so hopefully this will improve performance.

BUG=656320
==========

to

==========
Use new skia resource clearing API

This will clear most of the same data as the previous approach, but will
preserver the glyph cache. Thrashing of the glyph cache appears to be
a major source of jank, so hopefully this will improve performance.

BUG=656320
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
==========

[ericrk, 2017-05-12 21:38:04]

The CQ bit was checked by ericrk@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-12 21:39:25]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-12 23:28:31]

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

[commit-bot: I haz the power, 2017-05-12 23:28:32]

Dry run: Try jobs failed on following builders:
  win_chromium_x64_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[ericrk, 2017-05-18 18:24:08]

The CQ bit was checked by ericrk@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-18 18:25:26]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[ericrk, 2017-05-18 21:27:10]

ericrk@chromium.org changed reviewers:
+ vmiura@chromium.org

[ericrk, 2017-05-18 21:27:10]

FYI, this is the change - very small... Just want to make sure it behaves as
expected (need to try out the site you mentioned).

[commit-bot: I haz the power, 2017-05-19 00:05:58]

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

[commit-bot: I haz the power, 2017-05-19 00:05:59]

Dry run: This issue passed the CQ dry run.