Fail gracefully if MakeRenderTarget fails

Fail gracefully if MakeRenderTarget fails

We recently started passing --preAbandonGpuContext when running DM on
valgrind, resulting in this call returning nullptr. We had not been
checking for it, so we crash. Already fixed one in crrev.com/1959173002,
and now we reach another one.

BUG=skia:5282
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1972933002

Committed: https://skia.googlesource.com/skia/+/a1b283345b27fef91908b104a30cb89e6fbdaade

[scroggo_chromium, 2016-05-12 12:56:38]

Description was changed from

==========
Fail gracefully if MakeRenderTarget fails

We recently started passing --preAbandonGpuContext when running DM on
valgrind, resulting in this call returning nullptr. We had not been
checking for it, so we crash. Already fixed one in crrev.com/1959173002,
and now we reach another one.

BUG=skia:5282
==========

to

==========
Fail gracefully if MakeRenderTarget fails

We recently started passing --preAbandonGpuContext when running DM on
valgrind, resulting in this call returning nullptr. We had not been
checking for it, so we crash. Already fixed one in crrev.com/1959173002,
and now we reach another one.

BUG=skia:5282
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[scroggo_chromium, 2016-05-12 12:57:09]

scroggo@chromium.org changed reviewers:
+ robertphillips@google.com

[scroggo_chromium, 2016-05-12 12:57:16]

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

[commit-bot: I haz the power, 2016-05-12 12:57:23]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1972933002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1972933002/1

[robertphillips, 2016-05-12 13:15:00]

lgtm

[scroggo, 2016-05-12 13:18:36]

The CQ bit was unchecked by scroggo@google.com

[scroggo, 2016-05-12 13:18:36]

The CQ bit was checked by scroggo@google.com

[commit-bot: I haz the power, 2016-05-12 13:18:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1972933002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1972933002/1

[commit-bot: I haz the power, 2016-05-12 13:19:41]

Description was changed from

==========
Fail gracefully if MakeRenderTarget fails

We recently started passing --preAbandonGpuContext when running DM on
valgrind, resulting in this call returning nullptr. We had not been
checking for it, so we crash. Already fixed one in crrev.com/1959173002,
and now we reach another one.

BUG=skia:5282
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Fail gracefully if MakeRenderTarget fails

We recently started passing --preAbandonGpuContext when running DM on
valgrind, resulting in this call returning nullptr. We had not been
checking for it, so we crash. Already fixed one in crrev.com/1959173002,
and now we reach another one.

BUG=skia:5282
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/a1b283345b27fef91908b104a30cb89e6fbdaade
==========

[commit-bot: I haz the power, 2016-05-12 13:19:42]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/a1b283345b27fef91908b104a30cb89e6fbdaade