Revert of add access checks to receivers on function callbacks

Revert of add access checks to receivers on function callbacks (patchset #5 id:80001 of https://codereview.chromium.org/1036743004/)

Reason for revert:
This seems to lead to lots of timeouts of layout tests, e.g.:
http://build.chromium.org/p/client.v8/builders/V8-Blink%20Linux%2064/builds/2807

Original issue's description:
> add access checks to receivers on function callbacks
>
> R=verwaest@chromium.org
> BUG=468451
> LOG=N
>
> Committed: https://crrev.com/255528710b0a128eef7b66827d9ac43e44650ff4
> Cr-Commit-Position: refs/heads/master@{#27452}

TBR=verwaest@chromium.org,dcarney@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=468451
Committed: https://crrev.com/f0d555b26ddbf7f825e78928197932b45db2ac8a
Cr-Commit-Position: refs/heads/master@{#27457}

[Michael Achenbach, 2015-03-25 18:30:56]

Created Revert of add access checks to receivers on function callbacks

[commit-bot: I haz the power, 2015-03-25 18:31:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1023783009/1

[commit-bot: I haz the power, 2015-03-25 18:31:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-25 18:32:00]

Patchset 1 (id:??) landed as
https://crrev.com/f0d555b26ddbf7f825e78928197932b45db2ac8a
Cr-Commit-Position: refs/heads/master@{#27457}