Onion soup content/renderer/media/stream/remote_media_stream_track_adapter.cc|h

This is part of the 4.3 phase on the design document [1]. It prepares
ground for dependent mediastream classes to be Onion soup'ed.

[1] https://docs.google.com/document/d/1rHJGi1U72qZsOGIctIf7GKRaY8d7BgtVW8MaMYumzYY/edit

BUG=704136
R=guidou@chromium.org, haraken@chromium.org

Change-Id: Ib56eb8a4dc4c00f653d1a6b750eb526263b68976
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1672800
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672132}
9 files changed