fix for high resolution timer on windows.
The CLs here
https://codereview.chromium.org/489793003
and here
https://codereview.chromium.org/395913006
In isolation look correct but taken together cause a overflow or underflow
bug. Basically the message loop was calling Time::ActivateHighResolutionTimer(false)
all the time (or very often) so the g_high_res_timer_count was underflowing
or overflowing.
Now messageloop only calls ActivateHighResolutionTimer in a balanced way.
This can make the base_unittests fail as well with
--gtest_filter=MessageLoopTest.HighResolutionTimer
BUG=153139
TEST=included, see bug for manual testing.
Review URL: https://codereview.chromium.org/541203002
Cr-Commit-Position: refs/heads/master@{#293434}
3 files changed
