Revert of ipc: Add basic memory usage tests for attachment brokering.

Revert of ipc: Add basic memory usage tests for attachment brokering. (patchset #4 id:60001 of https://codereview.chromium.org/1465623002/ )

Reason for revert:
Failing on Mac ASan 64 Tests (1)

Original issue's description:
> ipc: Add basic memory usage tests for attachment brokering.
>
> I added two tests for memory leaks in the attachment brokering process. The
> first checks memory usage after brokering a single, large, shared memory object.
> The second checks memory usage after brokering a thousand, smaller memory
> objects.
>
> BUG=557387
>
> Committed: https://crrev.com/a519e56d03e1f6d69b7475bdd006f5e47b4f581e
> Cr-Commit-Position: refs/heads/master@{#360935}

TBR=tsepez@chromium.org,mark@chromium.org,erikchen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=557387
Committed: https://crrev.com/0d27e6d351f825bc1f9d1483c44ddb3626a93580
Cr-Commit-Position: refs/heads/master@{#360991}

[dcheng, 2015-11-21 02:45:36]

Created Revert of ipc: Add basic memory usage tests for attachment brokering.

[commit-bot: I haz the power, 2015-11-21 02:46:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1466633003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1466633003/1

[commit-bot: I haz the power, 2015-11-21 02:48:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-21 02:49:06]

Patchset 1 (id:??) landed as
https://crrev.com/0d27e6d351f825bc1f9d1483c44ddb3626a93580
Cr-Commit-Position: refs/heads/master@{#360991}