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These pass now that appcache on UI is supported, and other fixes.

Bug: 824858, 824856
Change-Id: Iaaedd108065df68b28bc243bab078ee5a6b70c25
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1707749
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678552}