[getUserMedia] Remove default value update for auto mirroring based on ec.

The logic that was upstream before the main refactoring of the
constraints made so that the default value of autoGainControl would not be
effected by echoCancellation. This CL fixes the current implementation
to reflect such behavior.

Qualitatively, however, this should not have an impact because (a) this
would only effect the default value, and most importantly (b) the
assignment was &= rather than a plain assignment.

There are already tests in place to prevent regressions in this area.

BUG=731170

Change-Id: Icf5a161654b57c70d66cbea7ab209156204a4838
Reviewed-on: https://chromium-review.googlesource.com/c/1402801
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Armando Miraglia <armax@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621511}
1 file changed