Fix typo in UMA histogram name.

Fix typo in UMA histogram name.

The histogram name is WebAudio.AudioDestination.HardwareBufferSize,
but the code used WebAudio.AudioDestination.HardwareBuffersize ("Size
vs "size").

BUG=609620
TEST=manually verified that HardwareBufferSize histogram changes in chrome://histogram

Committed: https://crrev.com/2131caa7cc48c07ac4d5920bfd22c04bd35f670c
Cr-Commit-Position: refs/heads/master@{#391989}

[Raymond Toy, 2016-05-05 22:42:26]

rtoy@chromium.org changed reviewers:
+ hongchan@chromium.org

[Raymond Toy, 2016-05-05 22:42:26]

PTAL.

[hongchan, 2016-05-05 22:43:11]

lgtm

[Raymond Toy, 2016-05-05 22:44:39]

The CQ bit was checked by rtoy@chromium.org

[commit-bot: I haz the power, 2016-05-05 22:45:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1954913002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1954913002/1

[commit-bot: I haz the power, 2016-05-06 02:34:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-06 02:36:36]

Description was changed from

==========
Fix typo in UMA histogram name.

The histogram name is WebAudio.AudioDestination.HardwareBufferSize,
but the code used WebAudio.AudioDestination.HardwareBuffersize ("Size
vs "size").

BUG=609620
TEST=manually verified that HardwareBufferSize histogram changes in
chrome://histogram
==========

to

==========
Fix typo in UMA histogram name.

The histogram name is WebAudio.AudioDestination.HardwareBufferSize,
but the code used WebAudio.AudioDestination.HardwareBuffersize ("Size
vs "size").

BUG=609620
TEST=manually verified that HardwareBufferSize histogram changes in
chrome://histogram

Committed: https://crrev.com/2131caa7cc48c07ac4d5920bfd22c04bd35f670c
Cr-Commit-Position: refs/heads/master@{#391989}
==========

[commit-bot: I haz the power, 2016-05-06 02:36:37]

Patchset 1 (id:??) landed as
https://crrev.com/2131caa7cc48c07ac4d5920bfd22c04bd35f670c
Cr-Commit-Position: refs/heads/master@{#391989}