Revert ExtendableMessageEvent same heap verification.

Revert ExtendableMessageEvent same heap verification.

Revert r440390's debug instrumentation of ExtendableMessageEvent.

R=
BUG=655926
Review-Url: https://codereview.chromium.org/2623273004
Cr-Commit-Position: refs/heads/master@{#443299}
Committed: https://chromium.googlesource.com/chromium/src/+/8f00e720aadeb5fdd7b14d86b1420124fbf92f00

[sof, 2017-01-12 13:33:52]

The CQ bit was checked by sigbjornf@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-01-12 13:34:10]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[sof, 2017-01-12 13:38:59]

sigbjornf@opera.com changed reviewers:
+ haraken@chromium.org, nhiroki@chromium.org

[sof, 2017-01-12 13:39:00]

please take a look.

[commit-bot: I haz the power, 2017-01-12 15:28:05]

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

[commit-bot: I haz the power, 2017-01-12 15:28:06]

Dry run: Try jobs failed on following builders:
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[haraken, 2017-01-12 15:57:10]

LGTM

[sof, 2017-01-12 16:23:25]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2017-01-12 16:23:55]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-12 18:37:55]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484238205329860, "parent_rev":
"861d6ea98b5b7a7c23b8c12ee6354a10411d86d4", "commit_rev":
"8f00e720aadeb5fdd7b14d86b1420124fbf92f00"}

[commit-bot: I haz the power, 2017-01-12 18:38:39]

Description was changed from

==========
Revert ExtendableMessageEvent same heap verification.

Revert r440390's debug instrumentation of ExtendableMessageEvent.

R=
BUG=655926
==========

to

==========
Revert ExtendableMessageEvent same heap verification.

Revert r440390's debug instrumentation of ExtendableMessageEvent.

R=
BUG=655926

Review-Url: https://codereview.chromium.org/2623273004
Cr-Commit-Position: refs/heads/master@{#443299}
Committed:
https://chromium.googlesource.com/chromium/src/+/8f00e720aadeb5fdd7b14d86b142...
==========

[commit-bot: I haz the power, 2017-01-12 18:38:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8f00e720aadeb5fdd7b14d86b142...