Kills TraceTicks, which was functionally the same as TimeTicks

This was not true until last week's submission of
http://crrev.com/1374753004.

BUG=541692
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
NO_PRESUBMIT=true

Review URL: https://codereview.chromium.org/1424703003

Cr-Commit-Position: refs/heads/master@{#358047}


CrOS-Libchrome-Original-Commit: 2bccc2cf38624593e1adafefccec7314aa573b0f
13 files changed
tree: dfe67dacc77a82c7d0c038edeefd8598af7c76f0
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/