update to accommodate latest clang in chrome toolchain

update to accommodate latest clang in chrome toolchain

remove asserts for null pointers to references
change var args signature to pointer instead of array

R=reed,mtklein

Committed: https://skia.googlesource.com/skia/+/a10742c69ce47d346e3cf23e7be909c9f29b401e

[mtklein, 2014-09-18 14:05:27]

lgtm

[caryclark, 2014-09-18 14:06:12]

The CQ bit was checked by caryclark@google.com

[commit-bot: I haz the power, 2014-09-18 14:06:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/577243002/1

[commit-bot: I haz the power, 2014-09-18 14:06:57]

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

[commit-bot: I haz the power, 2014-09-18 14:06:57]

Presubmit check for 577243002-1 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Since the CL is editing public API, you must have an LGTM from one of:
('reed@chromium.org', 'reed@google.com', 'bsalomon@chromium.org',
'bsalomon@google.com', 'djsollen@chromium.org', 'djsollen@google.com')

[reed1, 2014-09-18 17:28:09]

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

[reed1, 2014-09-18 17:28:09]

The CQ bit was checked by reed@google.com

[reed1, 2014-09-18 17:28:09]

lgtm

[commit-bot: I haz the power, 2014-09-18 17:28:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/577243002/1

[commit-bot: I haz the power, 2014-09-18 18:00:44]

Committed patchset #1 (id:1) as a10742c69ce47d346e3cf23e7be909c9f29b401e