Those can only be used by the old Hangouts effect plugin and it isn't
used anymore.
Since those APIs depend on URL.createObjectURL(MediaStream) which is
deprecated, it is necessary to first remove them from the codebase
in order to continue removing URL.createObjectURL(MediaStream).
Bug: 852412
Change-Id: If64e8e7259a6d51ccf89362b59c9d6fc7c890a30
Reviewed-on: https://chromium-review.googlesource.com/1099159
Commit-Queue: Florent Castelli <orphis@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588819}
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