Check client_ isn't null in GpuCompositorframeSink.

Check client_ isn't null in GpuCompositorframeSink.

All other methods that call something on client_ check it's not null
first. There is a crash during shutdown for mash_browser_tests that is
caused by this.

BUG=666481
Committed: https://crrev.com/f244dba45916187f9e025c43bf4d3c49983282d3
Cr-Commit-Position: refs/heads/master@{#436722}

[kylechar, 2016-12-06 20:09:02]

kylechar@chromium.org changed reviewers:
+ fsamuel@chromium.org

[kylechar, 2016-12-06 20:09:06]

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

[commit-bot: I haz the power, 2016-12-06 20:09:37]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Fady Samuel, 2016-12-06 20:10:46]

lgtm

[kylechar, 2016-12-06 20:12:21]

The CQ bit was unchecked by kylechar@chromium.org

[kylechar, 2016-12-06 20:12:22]

The CQ bit was checked by kylechar@chromium.org

[commit-bot: I haz the power, 2016-12-06 20:13:05]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-12-06 21:11:34]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481055142220660, "parent_rev":
"03494f8d169b6c08acaf8e9c178c4ffd7b011ecb", "commit_rev":
"9a927487c3cb83a0dfc16232ff6027822e503247"}

[commit-bot: I haz the power, 2016-12-06 21:11:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-06 21:16:08]

Description was changed from

==========
Check client_ isn't null in GpuCompositorframeSink.

All other methods that call something on client_ check it's not null
first. There is a crash during shutdown for mash_browser_tests that is
caused by this.

BUG=666481
==========

to

==========
Check client_ isn't null in GpuCompositorframeSink.

All other methods that call something on client_ check it's not null
first. There is a crash during shutdown for mash_browser_tests that is
caused by this.

BUG=666481

Committed: https://crrev.com/f244dba45916187f9e025c43bf4d3c49983282d3
Cr-Commit-Position: refs/heads/master@{#436722}
==========

[commit-bot: I haz the power, 2016-12-06 21:16:09]

Patchset 1 (id:??) landed as
https://crrev.com/f244dba45916187f9e025c43bf4d3c49983282d3
Cr-Commit-Position: refs/heads/master@{#436722}