Imported corrected timer function from google 3.10 code!
BLOCK: Full SYNC for unused code. from 3.10.y
Revert "Imported corrected timer function from google 3.10 code!"

This reverts commit af273487e11d3f0487552d59e5084f436600dc63.

After tests, performance drop too high. not good for us now.
Merge remote-tracking branch 'upstream/master-jelly-cm-aokp' into master-jelly-cm-aokp