Chrome: Pin to version 60.0.3107.0_rc-r1

DO NOT REVERT THIS CL.
In general, reverting chrome (un)pin CLs does not do what you expect.
Instead, use `cros pinchrome` to generate new CLs.

BUG=725860
TEST=None
CQ-DEPEND=*I31847de19d4a168513965b19933afd4eb8b355db

Change-Id: I9dd7e1105f4bd1bb9d207ec882e83d0a77c00c05
Reviewed-on: https://chromium-review.googlesource.com/513565
Tested-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: David Riley <davidriley@chromium.org>
10 files changed