Set the skia glyph cache count limit to 64

Set the skia glyph cache count limit to 64

The skia glyph cache can use up to 4 GDI handles per cache entry (1 HFONT,
1 HBITMAP, 2 HDCs). There's a global (session-wide) limit of GDI handles
at 10k on some version of windows, so we need to keep the per-process handle
count well below this limit to avoid exhaustion. This sets the limit at 64
cache entries so the skia glyph cache will stay under ~256 handles per process.

BUG=314387
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=233531

[jamesr, 2013-11-05 23:27:27]

PTAL.  We'll see how this behaves on the perf bots and adjust if necessary.

[tonyg, 2013-11-06 00:09:04]

[+perf sheriff heads up]

lgtm

[cpu_(ooo_6.6-7.5), 2013-11-06 03:11:35]

lgtm

[jamesr, 2013-11-06 18:16:17]

Mike - need your stamp here (or someone else in the skia/ OWNERS file).

[reed1, 2013-11-06 19:32:04]

lgtm

[commit-bot: I haz the power, 2013-11-06 20:22:17]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jamesr@chromium.org/60933003/100001

[commit-bot: I haz the power, 2013-11-06 23:29:15]

Retried try job too often on win_rel for step(s) browser_tests,
chrome_frame_net_tests, chrome_frame_tests, chrome_frame_unittests,
content_browsertests, mini_installer_test, nacl_integration,
sync_integration_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2013-11-06 23:46:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jamesr@chromium.org/60933003/100001

[commit-bot: I haz the power, 2013-11-07 07:42:04]

Change committed as 233531