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Peter Kotwicz authored
This CL adds CustomTabActivityTabProvider#registerTabObserver() CustomTabActivityTabProvider#unregisterTabObserver() These methods register (and unregister) a TabObserver for the CustomTabActivity's active tab. The tab being observed is changed when the CustomTabActivity's active tab changes. This differs from TabObserverRegistrar#registerTabObserver() which registers the passed-in TabObserver for all newly created tabs. BUG=1020911 TEST=TabObserverRegistrarTest.testObserveActiveTab Change-Id: Ie5c4b8f287209b672e89184a3e9f0710c69102ed Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1896140 Commit-Queue: Peter Kotwicz <pkotwicz@chromium.org> Reviewed-by:
Peter Conn <peconn@chromium.org> Cr-Commit-Position: refs/heads/master@{#713554}
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