Push deprecation for kDataUriHasOctothorpe to M71

Before this can be deprecated we need to get a WebView UMA landed and
get data for it, and we need to then provide some sort of SDK quirk for
WebView based on the results. That will not happen in time for M68, or
probably even M69. Shooting for M71 to be safe.

Bug: 123004
Change-Id: Ia7fbe3223ab2b2a302eb4b3732f5070eb69e3820
Reviewed-on: https://chromium-review.googlesource.com/1075767
Reviewed-by: Rick Byers <rbyers@chromium.org>
Commit-Queue: Stephen McGruer <smcgruer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563743}
1 file changed