[getUserMedia] Removal of non-standard googTypingNoiseDetection constraint.

The non-standard googTypingNoiseDetection is a constraint that is used
to enable or disable getStats behavior, rather than controlling processing.
This means that enabling or disabling this non-standard constraint only
affects a non-standard stat behavior.

Further, looking at the usage of the constraint internally and externally,
the flag is almost always disabled.

This CL silently removes the constraint by removing the processing logic
in the select-settings algorithm and sets the flag associated to
typing noise detection to off (false).

BUG=924485

Change-Id: Id2a0696b3264c985d170e8c7afac1c228a7fa4e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1617352
Commit-Queue: Armando Miraglia <armax@chromium.org>
Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662156}
10 files changed