Reset components/timers/ to r334380.

Update this directory to contain the stock code from
https://chromium.googlesource.com/chromium/src/components/timers/
at 7eba1895 (r332440), as is currently built on Chrome OS.

BUG=chromium:521005

Change-Id: I1b797e3ae9353d39816994e1946340d7d2f7895d
12 files changed