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This change adds a class which shows a Presentation API receiver page in
a popup-style window that is started fullscreen on a specific wired
display.

It also changes the handling of one-off OTR profiles used by
presentations, which affects this class and offscreen tabs.  Previously,
offscreen tabs assumed ownership of their OTR profiles.  However, it was
possible for this to be violated by opening a DevTools window and
Browser would think that it could destroy the profile.  Additionally,
there was no handling of the original profile being destroyed, which
would leave dangling references in the OTR profile.  This has been
addressed by adding an IndependentOTRProfileManager class, which helps
both offscreen tabs and PresentationReceiverWindow manage the lifetime
of these one-off OTR profiles.

Bug: 777654, 786158, 664351, 727487
Change-Id: I64d032419d341affbdde4ee80b57d45c99648588
Reviewed-on: https://chromium-review.googlesource.com/742122
Commit-Queue: Brandon Tolsch <btolsch@chromium.org>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Reviewed-by: Derek Cheng <imcheng@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Yuri Wiitala <miu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524615}