SkFontHost_FreeType takes advantage of SkStreamAsset.

SkFontHost_FreeType takes advantage of SkStreamAsset.

With recent changes, SkTypeface now deals in SkStreamAsset instead of
SkStream. Take advantage of this for performance with FreeType.

Committed: https://skia.googlesource.com/skia/+/52b64b45e98c7f0342ecbfb16a6da51065e8262a

[bungeman-skia, 2015-01-27 18:31:00]

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

[bungeman-skia, 2015-01-27 18:35:34]

The CQ bit was checked by bungeman@google.com

[commit-bot: I haz the power, 2015-01-27 18:35:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/882763002/1

[commit-bot: I haz the power, 2015-01-27 18:35:49]

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 2015-01-28 00:35 UTC

[reed1, 2015-01-27 18:36:56]

lgtm

[commit-bot: I haz the power, 2015-01-27 18:41:20]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/52b64b45e98c7f0342ecbfb16a6da51065e8262a