Rename CrossThreadBind() to CrossThreadBindRepeating()

This is part of the effort to clarify the "repeating nature"
of the existing CrossThreadBind. Its "non-repeating" counterpart
if CrossThreadBindOnce().

Note that there is a hope to eventually deprecate CrossThreadBindRepeating(),
but for now it's fine to have it, as it is helpful for incremental migration
from base::Bind() to CrossThreadBindRepeating(), and hopefully then
CrossThreadBindOnce().

BUG=963574
R=haraken@chromium.org, hiroshige@chromium.org

Change-Id: Ia6d04fea99e48e2fdef8a6508562e3699b174c8b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1667400
Reviewed-by: Hiroshige Hayashizaki <hiroshige@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Auto-Submit: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#671105}
20 files changed