commit 925176b619bbb1213ec73be61bddbc8f86002bb2
author Vovo Yang <vovoy@google.com> Thu Jan 25 02:32:54 2018
committer chrome-bot <chrome-bot@chromium.org> Thu Jan 25 10:43:17 2018
tree 60e569132502ed0cf19b5b160c008462817d9298
parent 0c9b56092424c370eff748b25d49caceb9a18dab

fps_meter: measuring fps with ftrace

Sample output:
[111111111111111111111111111111111111111111111111111111111111] FPS: 60
[11111111111111 11111111111111111111 11111111 111111111111111] FPS: 57
[111111111111111111111111111111111    11111111111111111111111] FPS: 56

BUG=chromium:805780
TEST=manual test

Change-Id: Id174a1027aca4e7d3365338331a64f16cf886f04
Reviewed-on: https://chromium-review.googlesource.com/880532
Commit-Ready: Vovo Yang <vovoy@chromium.org>
Tested-by: Vovo Yang <vovoy@chromium.org>
Reviewed-by: Cheng-Yu Lee <cylee@google.com>