Revert of Reland Track memory consumption of SP on top 7 sites.

Revert of Reland Track memory consumption of SP on top 7 sites. (patchset #1 id:1 of https://codereview.chromium.org/1052843002/)

Reason for revert:
I think the original CL meant to make changes to memory.py, not run-perf-test.cfg. We shouldn't be submitting changes to run-perf-test.cfg, this file is used by the perf-try bots to pass try job parameters.

Original issue's description:
> Track memory consumption of SP on top 7 sites.
>
> Tests:
> android: https://codereview.chromium.org/1023783006/
> linux & mac: https://codereview.chromium.org/1013723006/
> win: https://codereview.chromium.org/1038773002/
>
> All above pass the "Running With Patch" step.
>
> BUG=None
>
> Committed: https://crrev.com/82b8e167143a5f0d4dd4515c6d0e14a64f654083
> Cr-Commit-Position: refs/heads/master@{#323680}

TBR=pdr@chromium.org,sullivan@chromium.org,prasadv@chromium.org,pan.deng@intel.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Committed: https://crrev.com/e2ab15b7f35de5bea9f0528e88c0f4449f1c4b69
Cr-Commit-Position: refs/heads/master@{#324088}

[shatch, 2015-04-07 19:13:20]

Created Revert of Reland Track memory consumption of SP on top 7 sites.

[commit-bot: I haz the power, 2015-04-07 19:14:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1062253002/1

[commit-bot: I haz the power, 2015-04-07 19:15:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-07 19:17:13]

Patchset 1 (id:??) landed as
https://crrev.com/e2ab15b7f35de5bea9f0528e88c0f4449f1c4b69
Cr-Commit-Position: refs/heads/master@{#324088}

[pdr., 2015-04-07 22:09:18]

On 2015/04/07 at 19:17:13, commit-bot wrote:
> Patchset 1 (id:??) landed as
https://crrev.com/e2ab15b7f35de5bea9f0528e88c0f4449f1c4b69
> Cr-Commit-Position: refs/heads/master@{#324088}

Thanks for rolling this out. I'm relanding this correctly in
https://codereview.chromium.org/1066223002.