GitLab

Convert SadTabTabHelper to directly track registration
with the observed WebState instead of relying on the
deprecated code in WebStateObserver.

Pass the WebState to SadTabTabHelperTestDelegate to
fix the unit test (as WebStateObserver method web_state
always return nullptr).

Bug: 775684
Change-Id: I7908650e3612645eddf03eb7ea01f88dfba4d395
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Reviewed-on: https://chromium-review.googlesource.com/768724
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517791}