[cc] Remove all WTF #includes from CCLayerTreeHost

[cc] Remove all WTF #includes from CCLayerTreeHost

This transitively involved cleaning up RateLimiter and the types that CCProxy,
CCPrioritizedTextureManager, and CCPrioritizedTexture are stored in.

This is a relanding of https://chromiumcodereview.appspot.com/11035071.

BUG=154451
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=161002

[enne (OOO), 2012-10-09 19:56:00]

The original patch broke because WebKit landed the HashMap first/second ->
key/value change and the #ifdefs in CCLayerTreeHost.cpp for the rate limiter
hadn't been removed as a part of this patch.  Oops.

That is the only change over the original version.

[tfarina, 2012-10-09 19:58:07]

To make it easier to see what changed from the revert, i.e, what you did to fix
the issues, is usually better to upload the revert in patch set 1, and then
upload a next version (patch set 2) with the actual changes.

[enne (OOO), 2012-10-09 20:07:22]

Ah, ok.  I will do that next time, thanks.

[jamesr, 2012-10-09 20:19:21]

lgtm

[commit-bot: I haz the power, 2012-10-09 22:56:52]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/enne@chromium.org/11091028/1

[commit-bot: I haz the power, 2012-10-10 01:29:02]

Change committed as 161002