Extend 3 months for M17N metrics.

We launched this feature late due to some reviews.

Bug: 888885, 938030
Change-Id: I7ab1bd93655f061c7c18ea946107e7dd28d7d24c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1528023
Commit-Queue: Leo Zhang <googleo@chromium.org>
Reviewed-by: Shu Chen <shuchen@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641907}
1 file changed