base: Add base::TimeTicks::IsHighResNowFastAndReliable
This will allow clients determine if it's okay to call
HighResNow often and rely on its results. If it is not
reliable, the client can use a fallback path that is
better than relying on a bad HighResNow.
BUG=305645
Review URL: https://codereview.chromium.org/27317002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228798 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: cef72a9c2505d9de8db889a43c8cf8f9f44baf4b
2 files changed