Fix type conversion compile errors

Fix type conversion compile errors

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1949553003

Committed: https://skia.googlesource.com/skia/+/419ca64f0f800dc098369b5aa5a604acd017b240

[Brian Osman, 2016-05-04 15:01:28]

Description was changed from

==========
Fix type conversion compile errors

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

to

==========
Fix type conversion compile errors

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[Brian Osman, 2016-05-04 15:01:56]

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

[commit-bot: I haz the power, 2016-05-04 15:01:58]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1949553003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1949553003/1

[Brian Osman, 2016-05-04 15:02:06]

brianosman@google.com changed reviewers:
+ jvanverth@google.com

[jvanverth1, 2016-05-04 15:15:09]

lgtm

[commit-bot: I haz the power, 2016-05-04 15:15:48]

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

[commit-bot: I haz the power, 2016-05-04 15:15:49]

Dry run: This issue passed the CQ dry run.

[Brian Osman, 2016-05-04 15:18:42]

The CQ bit was checked by brianosman@google.com

[commit-bot: I haz the power, 2016-05-04 15:18:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1949553003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1949553003/1

[commit-bot: I haz the power, 2016-05-04 15:19:48]

Description was changed from

==========
Fix type conversion compile errors

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Fix type conversion compile errors

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/419ca64f0f800dc098369b5aa5a604acd017b240
==========

[commit-bot: I haz the power, 2016-05-04 15:19:49]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/419ca64f0f800dc098369b5aa5a604acd017b240