Assert that AudioContext::destination() is not called from the audio thread

Assert that AudioContext::destination() is not called from the audio thread

Add assertion and comment that AudioContext::destination() cannot be
called from the audio thread and explain why.

BUG=604477, 561295
TEST=none

Committed: https://crrev.com/bb4ad50fdcd777b451d98690e9ccf6b2c6677ea5
Cr-Commit-Position: refs/heads/master@{#388069}

[Raymond Toy, 2016-04-18 20:31:54]

Description was changed from

==========
Assert that AudioContext::destination() is not called from the audio thread

Add assertion and comment that AudioContext::destination() cannot be
called from the audio thread and explain why.

BUG=561295,
TEST=none
==========

to

==========
Assert that AudioContext::destination() is not called from the audio thread

Add assertion and comment that AudioContext::destination() cannot be
called from the audio thread and explain why.

BUG=604477, 561295
TEST=none
==========

[Raymond Toy, 2016-04-18 20:32:13]

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

[Raymond Toy, 2016-04-18 20:32:13]

PTAL

[hongchan, 2016-04-18 20:42:49]

lgtm

[Raymond Toy, 2016-04-18 20:54:23]

The CQ bit was checked by rtoy@chromium.org

[commit-bot: I haz the power, 2016-04-18 20:54:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1899903002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1899903002/1

[commit-bot: I haz the power, 2016-04-18 23:15:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-18 23:16:25]

Description was changed from

==========
Assert that AudioContext::destination() is not called from the audio thread

Add assertion and comment that AudioContext::destination() cannot be
called from the audio thread and explain why.

BUG=604477, 561295
TEST=none
==========

to

==========
Assert that AudioContext::destination() is not called from the audio thread

Add assertion and comment that AudioContext::destination() cannot be
called from the audio thread and explain why.

BUG=604477, 561295
TEST=none

Committed: https://crrev.com/bb4ad50fdcd777b451d98690e9ccf6b2c6677ea5
Cr-Commit-Position: refs/heads/master@{#388069}
==========

[commit-bot: I haz the power, 2016-04-18 23:16:26]

Patchset 1 (id:??) landed as
https://crrev.com/bb4ad50fdcd777b451d98690e9ccf6b2c6677ea5
Cr-Commit-Position: refs/heads/master@{#388069}