Revert of Reland: cc: Make tile manager object persist for the length of LTHI.

Revert of Reland: cc: Make tile manager object persist for the length of LTHI. (patchset #5 id:80001 of https://codereview.chromium.org/1210073020/)

Reason for revert:
This appears to be causing the memory builders to fail:
http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20MSan%20Tests/builds/7778
http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20ChromeOS%20MSan%20Tests/builds/2733

BUG=508792
Original issue's description:
> Reland: cc: Make tile manager object persist for the length of LTHI.
>
> This patch makes TileManager be persistent throughout LTHI instead of
> deleting and recreating it. This makes it possible to store items
> on it that don't have to go away (such as PictureLayerTilingSets for
> example).
>
> R=enne
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
>
> Committed: https://crrev.com/792592da64887fc81e99c6588ad1b98a153db7ea
> Cr-Commit-Position: refs/heads/master@{#337921}
>
> Committed: https://crrev.com/e1437e24549275dcafbb8a7646ba22cf55408c84
> Cr-Commit-Position: refs/heads/master@{#338179}

TBR=enne@chromium.org,vmpstr@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/5629a028e32ca73cbf975762281c50277f769817
Cr-Commit-Position: refs/heads/master@{#338235}

[zhaoqin1, 2015-07-10 03:46:05]

Created Revert of Reland: cc: Make tile manager object persist for the length of
LTHI.

[commit-bot: I haz the power, 2015-07-10 03:46:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1229223003/1

[commit-bot: I haz the power, 2015-07-10 03:47:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-10 03:48:32]

Patchset 1 (id:??) landed as
https://crrev.com/5629a028e32ca73cbf975762281c50277f769817
Cr-Commit-Position: refs/heads/master@{#338235}