ECMAScript dates act as if the Gregorian changeover happened at the
beginning of time. This patch fixes up internationalized date
formatting to set that changeover properly, as opposed to the ICU
default which is in the 16th century.

BUG=chromium:537382
R=adamk,cira
LOG=Y

Review URL: https://codereview.chromium.org/1501113002

Cr-Commit-Position: refs/heads/master@{#32669}