WebSocket Pepper API: Add live object check to WebSocket PPAPI tests

Reland; WebSocket Pepper API: Add live object check to WebSocket PPAPI tests

- Add RUN_TEST_WITH_REFERENCE_CHECK macro which run a test then check leaked
 pepper objects.
- Use that macro to run all WebSocket related PPAPI unit tests
- Fix some object leak in tests found by the macro

BUG=87310
TEST=ui_tests --gtest_filter='PPAPITest.WebSocket_*'

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=114389

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=114604

[Takashi Toyoshima, 2011-12-13 12:11:59]

Hi pepper guys,

I split this change from Var/VarTracker reference counting issue.
In the discussion, I found testing interface provide useful API to check
leaked pepper objects, so I'd like to adapt it to my WebSocket related tests.
Actually, I found some object leaks in my tests, and fix them in this change.

Thanks,

[brettw, 2011-12-13 15:16:29]

lgtm

[dmichael (off chromium), 2011-12-13 16:04:03]

lgtm

[commit-bot: I haz the power, 2011-12-14 03:44:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/toyoshim@chromium.org/8934003/1

[commit-bot: I haz the power, 2011-12-14 06:02:55]

The commit queue went berserk retrying too often for a
seemingly flaky test. Builder is linux_rel, revision is 114351, job name
was 8934003-1 (retry) (previous was lost) (previous was lost) (previous was
lost).

[commit-bot: I haz the power, 2011-12-14 06:37:17]

No LGTM from valid reviewers yet.

[commit-bot: I haz the power, 2011-12-14 14:47:51]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/toyoshim@chromium.org/8934003/4003

[Takashi Toyoshima, 2011-12-14 14:57:39]

must be landed after a reverted bug fix.
reset the CQ flag.

[commit-bot: I haz the power, 2011-12-15 05:25:45]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/toyoshim@chromium.org/8934003/4003

[commit-bot: I haz the power, 2011-12-15 06:43:13]

Change committed as 114604