Record whether a file picker specialized for media content can be used

Record whether a file picker specialized for media content can be used

Finnur is working on a new file picker (Issue 656015), and in order to
decide on a shipping plan we'd like to gather some data on whether it
would be appropriate to ship in multiple stages.

R=finnur
BUG=665241
Review-Url: https://codereview.chromium.org/2649033007
Cr-Commit-Position: refs/heads/master@{#446337}
(cherry picked from commit 47b929861e84d93735a00b76a79faf1c40097078)

Review-Url: https://codereview.chromium.org/2663523002 .
Cr-Commit-Position: refs/branch-heads/2987@{#145}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/4f22ddf746b49176a2806e8677755bcf4e7f496a

[Peter Beverloo, 2017-01-27 16:18:44]

Description was changed from

==========
Record whether a file picker specialized for media content can be used

Finnur is working on a new file picker (Issue 656015), and in order to
decide on a shipping plan we'd like to gather some data on whether it
would be appropriate to ship in multiple stages.

R=finnur
BUG=665241

Review-Url: https://codereview.chromium.org/2649033007
Cr-Commit-Position: refs/heads/master@{#446337}
(cherry picked from commit 47b929861e84d93735a00b76a79faf1c40097078)
==========

to

==========
Record whether a file picker specialized for media content can be used

Finnur is working on a new file picker (Issue 656015), and in order to
decide on a shipping plan we'd like to gather some data on whether it
would be appropriate to ship in multiple stages.

R=finnur
BUG=665241

Review-Url: https://codereview.chromium.org/2649033007
Cr-Commit-Position: refs/heads/master@{#446337}
(cherry picked from commit 47b929861e84d93735a00b76a79faf1c40097078)

Review-Url: https://codereview.chromium.org/2663523002 .
Cr-Commit-Position: refs/branch-heads/2987@{#145}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/4f22ddf746b49176a2806e867775...
==========

[Peter Beverloo, 2017-01-27 16:18:45]

Committed patchset #1 (id:1) manually as
4f22ddf746b49176a2806e8677755bcf4e7f496a.

[Finnur, 2017-01-30 11:12:00]

Still LGTM.