Fix hotword module constantly restarting on Pixel 2.

Fix hotword module constantly restarting on Pixel 2.

The "googHotword" audio constraint used on the Pixel 2 is an optional constraint.

BUG=583720
TEST=Manually tested "Ok Google" on Pixel 2.
R=tommi@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/1a1c81ec936c85443994a2e19859acede59c6bb0

[Matt Giuca, 2016-02-24 02:23:23]

mgiuca@chromium.org changed reviewers:
+ mgiuca@chromium.org

[Matt Giuca, 2016-02-24 02:23:24]

I think it's fine to land this manually into the branch but we need to get a
working fix on trunk first (ideally before M50 branch point).

Then we can land this as a manual equivalent of a branch merge.

The CL description needs more detail to explain what the fix does and why this
is critical (i.e., that it fixes the hotword restart issue, and how it does so).
The title of this CL should be "Fix hotword module continuously restarting."
with the details about optional constraints in the subsequent paragraph.

TESTING= should be TEST=.

[Anand Mistry (off Chromium), 2016-02-24 02:40:16]

Description was changed from

==========
Treat "googHotword" audio constraint as optional.

BUG=583720
TESTED=Manually tested "Ok Google" on Samus.
==========

to

==========
Fix hotword module constantly restarting on Pixel 2.

The "googHotword" audio constraint used on the Pixel 2 is an optional
constraint.

BUG=583720
TEST=Manually tested "Ok Google" on Pixel 2.
==========

[Anand Mistry (off Chromium), 2016-02-25 22:46:34]

amistry@chromium.org changed reviewers:
+ tommi@chromium.org

[Anand Mistry (off Chromium), 2016-02-25 22:46:35]

tommi@chromium.org: I'm still waiting for advice on submitting this to the M49
branch, but as owner, I'd still like your review.

[tommi (sloooow) - chröme, 2016-02-26 12:23:27]

lgtm

[Anand Mistry (off Chromium), 2016-03-03 06:51:20]

Description was changed from

==========
Fix hotword module constantly restarting on Pixel 2.

The "googHotword" audio constraint used on the Pixel 2 is an optional
constraint.

BUG=583720
TEST=Manually tested "Ok Google" on Pixel 2.
==========

to

==========
Fix hotword module constantly restarting on Pixel 2.

The "googHotword" audio constraint used on the Pixel 2 is an optional
constraint.

BUG=583720
TEST=Manually tested "Ok Google" on Pixel 2.
R=tommi@chromium.org

Committed:
https://chromium.googlesource.com/chromium/src/+/1a1c81ec936c85443994a2e19859...
==========

[Anand Mistry (off Chromium), 2016-03-03 06:51:23]

Committed patchset #2 (id:20001) manually as
1a1c81ec936c85443994a2e19859acede59c6bb0 (presubmit successful).