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This CL converts base::Closure to base::RepeatingClosure.
This is a code health CL, should not cause any behavior
change.

With this CL, there will be no base::Callback,
or base::Closure or base::bind in autofill/

Bug: 1007635
Change-Id: I2d387ba822917dc080deeda93b2511d623b37beb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2272610
Auto-Submit: Xida Chen <xidachen@chromium.org>
Commit-Queue: Maxim Kolosovskiy <kolos@chromium.org>
Reviewed-by: Maxim Kolosovskiy <kolos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#784349}