Revert of High resolution timer fix for Windows

Revert of High resolution timer fix for Windows (https://codereview.chromium.org/395913006/)

Reason for revert:
This patch seems to make following browser_tests flakey

PPAPINaClNewlibTest.Graphics2D_FlushOffscreenUpdate
NetInternalsTest.netInternalsHSTSViewAddOverwrite
NetInternalsTest.netInternalsHSTSViewAddDelete
NetInternalsTest.netInternalsHSTSViewAddTwice

http://build.chromium.org/p/chromium.win/builders/XP%20Tests%20%282%29/builds/34734
http://build.chromium.org/p/chromium.win/builders/XP%20Tests%20%281%29/builds/32086
http://build.chromium.org/p/chromium.win/builders/Vista%20Tests%20%281%29/builds/47545


Original issue's description:
> This is jamesr@ code I am landing.
> 
> On Windows the message pump code tried to manage the systemwide timer resolution to fire delayed tasks with better than 15ms resolution but it was buggy:
> 
> 1- A short task that was not followed by any other task will leave the systemwide timer pegged to 1ms
> 
> 2- After we decided to crank up the timer we would 'lease' the timer for 1 second, for no good reason.
> 
> Both issues are detrimental to battery power.
> 
> The source of both problems is that we tried to decide with incomplete information. This patch solves that by having 1 bit for each pending task that requires a high resolution timer and a sum of the number of tasks that require high res timers.
> 
> BUG=153139
> TEST=included here, also see the bug for manual testing.
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284625

TBR=jamesr@chromium.org,darin@chromium.org,cpu@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=153139
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284664

[Kunihiko Sakamoto, 2014-07-22 11:30:22]

Created Revert of High resolution timer fix for Windows

[commit-bot: I haz the power, 2014-07-22 11:31:15]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ksakamoto@chromium.org/407073004/1

[commit-bot: I haz the power, 2014-07-22 11:32:47]

Change committed as 284664

[sof, 2014-07-22 12:37:51]

Another data point -- win_blink_rel bots cycled green as a result of this one,

http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel

[johnme, 2014-07-22 13:29:30]

On 2014/07/22 12:37:51, sof wrote:
> Another data point -- win_blink_rel bots cycled green as a result of this one,
> 
> http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel

And WebKit Win7 also turned red when this patch landed and cycled green when the
revert landed:
http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win7

It had been failing 30-100 tests (the number varied on each build) with the
following CHECK:
[3148:3056:0722/044517:1329752:FATAL:web_test_proxy.cc(557)] Check failed:
web_widget_->isAcceleratedCompositingActive().