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Navigations which fail with network errors may attempt to
auto-reload in some cases, in order to more seamlessly recover
from transient failures.

This behavior was previously implemented renderer-side and copied
verbatim from Chrome. The Chrome implementation has been moved
browser-side (see bug for why) and also made into a reusable
component.

This changes WebLayer to use the same component implementation
and deletes all the corresponding renderer logic.

Fixed: 1098578
Change-Id: I10c337abcae36f64be47f31b89e36c7393989077
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2311371
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Clark DuVall <cduvall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#792028}