Disable partial swap on windows

Disable partial swap on Windows.

Partial swap may be causing some performance problems, so disable it.

BUG=313104
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=236475

[Ken Russell (switch to Gerrit), 2013-11-20 22:19:20]

Please link to a bug ID describing the issue. It's almost certain that this is
going to have repercussions, so a more permanent archive of the conversation
than simply this CL is needed.

[jbauman, 2013-11-20 22:24:32]

On 2013/11/20 22:19:20, Ken Russell wrote:
> Please link to a bug ID describing the issue. It's almost certain that this is
> going to have repercussions, so a more permanent archive of the conversation
> than simply this CL is needed.

Ok, added. I forgot to mention that I'm just planning on checking this in just
long enough to get the perf bots to test it, the reverting it, so that I can see
if this is a productive way to go.

[Ken Russell (switch to Gerrit), 2013-11-20 22:27:08]

lgtm

[commit-bot: I haz the power, 2013-11-21 00:24:41]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jbauman@chromium.org/79643002/30001

[commit-bot: I haz the power, 2013-11-21 02:17:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jbauman@chromium.org/79643002/30001

[commit-bot: I haz the power, 2013-11-21 09:14:27]

Change committed as 236475