Use HighResNow whenever possible on Windows.

Relanding simonjam@'s CL https://codereview.chromium.org/41953002/ to enable QPC.

This may result in perf changes, the perf changes may only be in the measurements and not actual regressions.

BUG=158234

Review URL: https://codereview.chromium.org/429053002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286928 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed