Use base::size() instead of arraysize

This swaps the deprecated 'arraysize' macro for base::size(), in the
//content/browser/dom_storage/ folder. No change to logic.

Bug: 837308
Change-Id: I97a5bc00da50a61dc0f41abe916fc97591b0869a
Reviewed-on: https://chromium-review.googlesource.com/c/1375176
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616245}
3 files changed