Oilpan: fix WebSockets unit tests after r178758.

Oilpan: fix WebSockets unit tests after r178758.

Explicitly disconnect the channel on test completion, putting the heap
object in the expected state by the time the next GC sweep happens.

TBR=oilpan-reviews@chromium.org,tyoshino@chromium.org,yhirano@chromium.org,hiroshige@chromium.org
BUG=
NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=178778

[sof, 2014-07-23 19:18:54]

Please take a look.

[sof, 2014-07-23 19:20:13]

cf. failure seen,


http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac%20Oilpan%20...

[sof, 2014-07-23 19:34:42]

Pre-emptively landing this to fix the builds. If it is preferable to address
this differently, please do.

[sof, 2014-07-23 19:34:46]

The CQ bit was checked by sigbjornf@opera.com

[sof, 2014-07-23 19:34:52]

The CQ bit was unchecked by sigbjornf@opera.com

[sof, 2014-07-23 19:35:03]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-07-23 19:36:02]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sigbjornf@opera.com/410263002/1

[commit-bot: I haz the power, 2014-07-23 19:36:37]

Change committed as 178778

[haraken, 2014-07-23 23:32:50]

LGTM

[tyoshino (SeeGerritForStatus), 2014-07-24 03:24:28]

lgtm