The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f23979ab348a6dec88ffadcbaf9e05dc07d1ed93

commit f23979ab348a6dec88ffadcbaf9e05dc07d1ed93
Author: Armando Miraglia <armax@chromium.org>
Date: Thu Jan 10 14:20:53 2019

[CLEANUP] Remove cyclic dependency from header files.

In preparation to add support for OverconstrainedErrorEvent, we need to
remove a cyclic dependency between media_stream_constraints_util.h and
media_stream_constraints_util_sets.h. To do so, I have moved the few
trivial functions present in media_stream_constraints_util.h that were
required by media_stream_constraints_util_sets.h, and cleaned up the
forward declarations.

BUG=854988

Change-Id: Iddfd138c2a865af78704509affcabcbac759eb6a
Reviewed-on: https://chromium-review.googlesource.com/c/1404086
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Armando Miraglia <armax@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621573}
[modify] https://crrev.com/f23979ab348a6dec88ffadcbaf9e05dc07d1ed93/content/renderer/media/stream/media_stream_constraints_util.h
[modify] https://crrev.com/f23979ab348a6dec88ffadcbaf9e05dc07d1ed93/content/renderer/media/stream/media_stream_constraints_util_sets.h