Remove NTP preferences from incognito whitelist.

NTP preferences are removed from the persistent storage list for
incognito mode.
This means that after this CL, these preferences are only stored in
memory in incognito mode.

Bug: 861722
Change-Id: Icf97bcb06a9002e0145451b33f4cc1e2c56f1ed8
Reviewed-on: https://chromium-review.googlesource.com/1144820
Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576822}
1 file changed