Chrome: Pin to version 59.0.3064.0_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=chromium:713004
TEST=None
CQ-DEPEND=*I27cd69e3102272f369cc20d0230a7b12e4a6c394

Change-Id: I13eb0e2c4cfb4f6898a7e124fd5be013021d030b
Reviewed-on: https://chromium-review.googlesource.com/482707
Reviewed-by: Richard Barnette <jrbarnette@google.com>
Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Tested-by: Ningning Xia <nxia@chromium.org>
10 files changed