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The page at the previous url was much more complicated than necessary
for a network check so it could more easily fail for other non-network
related issues.

Bug: None
Change-Id: I9f79cb9f948b090c065cf6b9f9331217e65b380d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2311043
Commit-Queue: Mike Dougherty <michaeldo@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Auto-Submit: Mike Dougherty <michaeldo@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#790641}