Convert the few remaining ARRAYSIZE_UNSAFE -> arraysize.

Convert the few remaining ARRAYSIZE_UNSAFE -> arraysize.

There are still ARRAYSIZE_UNSAFEs in ppapi/tests/test_audio.cc, but it
defines it itself, and it might be compiled by some older NaCl toolchain
that doesn't support C++11. third_party/npapi/npspy/common/format.cpp
also has its own ARRAYSIZE_UNSAFE, but I'm hoping to delete npspy
completely.)

I'll remove ARRAYSIZE_UNSAFE from base/macro.h separately, since it's
quite likely we have deps that use our base (and those deps may use it).

R=ben@chromium.org
TBR=armansito@chromium.org
BUG=423134
Committed: https://crrev.com/2560ad88c6c237d40db5bf2e377cd552c33ef6ea
Cr-Commit-Position: refs/heads/master@{#300034}

[Ben Goodger (Google), 2014-10-17 00:02:45]

lgtm

[viettrungluu, 2014-10-17 00:27:02]

The CQ bit was checked by viettrungluu@chromium.org

[commit-bot: I haz the power, 2014-10-17 00:29:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/663673002/1

[commit-bot: I haz the power, 2014-10-17 00:42:29]

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

[commit-bot: I haz the power, 2014-10-17 00:42:32]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[viettrungluu, 2014-10-17 00:58:23]

viettrungluu@chromium.org changed reviewers:
+ armansito@chromium.org

[viettrungluu, 2014-10-17 00:58:30]

The CQ bit was checked by viettrungluu@chromium.org

[commit-bot: I haz the power, 2014-10-17 01:00:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/663673002/1

[commit-bot: I haz the power, 2014-10-17 01:21:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-17 01:21:44]

Patchset 1 (id:??) landed as
https://crrev.com/2560ad88c6c237d40db5bf2e377cd552c33ef6ea
Cr-Commit-Position: refs/heads/master@{#300034}