fix misc asserts and checks found by fuzzer

fix misc asserts and checks found by fuzzer

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1713383002

TBR=robertphilips

Committed: https://skia.googlesource.com/skia/+/00bea4ad310c4ec4dd95809b47ce3fbfa8fd0e1e

[reed1, 2016-02-20 21:47:27]

Description was changed from

==========
fix misc asserts and checks found by fuzzer

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

to

==========
fix misc asserts and checks found by fuzzer

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

[reed1, 2016-02-20 21:56:15]

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

[commit-bot: I haz the power, 2016-02-20 21:56:26]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1713383002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1713383002/1

[reed1, 2016-02-20 21:59:00]

The CQ bit was unchecked by reed@google.com

[reed1, 2016-02-20 21:59:40]

Description was changed from

==========
fix misc asserts and checks found by fuzzer

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

to

==========
fix misc asserts and checks found by fuzzer

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

TBR=robertphilips
==========

[reed1, 2016-02-20 21:59:40]

reed@google.com changed reviewers:
+ robertphillips@google.com

[reed1, 2016-02-20 21:59:48]

The CQ bit was checked by reed@google.com

[commit-bot: I haz the power, 2016-02-20 21:59:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1713383002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1713383002/1

[commit-bot: I haz the power, 2016-02-20 22:18:31]

Description was changed from

==========
fix misc asserts and checks found by fuzzer

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

TBR=robertphilips
==========

to

==========
fix misc asserts and checks found by fuzzer

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

TBR=robertphilips

Committed:
https://skia.googlesource.com/skia/+/00bea4ad310c4ec4dd95809b47ce3fbfa8fd0e1e
==========

[commit-bot: I haz the power, 2016-02-20 22:18:32]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/00bea4ad310c4ec4dd95809b47ce3fbfa8fd0e1e

[reed1, 2016-02-21 18:27:37]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1713413002/ by reed@google.com.

The reason for reverting is: speculative deps-roll fix.