Enable MidiManagerWinrt by default on Windows 10

Enable MidiManagerWinrt by default on Windows 10

Added runtime flag to disable the new backend.

BUG=645403
Committed: https://crrev.com/e041dc3faab67129c30b9c29d7e7ae74997ee0fd
Cr-Commit-Position: refs/heads/master@{#423116}

[Shao-Chuan Lee, 2016-10-05 05:22:07]

shaochuan@chromium.org changed reviewers:
+ isherman@chromium.org, toyoshim@chromium.org

[Shao-Chuan Lee, 2016-10-05 05:22:08]

isherman@: PTAL at histograms.xml, thanks.

[Ilya Sherman, 2016-10-05 05:49:19]

histograms.xml lgtm

[Takashi Toyoshima, 2016-10-05 06:10:05]

midi lgtm

[Shao-Chuan Lee, 2016-10-05 06:10:38]

The CQ bit was checked by shaochuan@chromium.org

[commit-bot: I haz the power, 2016-10-05 06:11:01]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-05 06:12:53]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-05 06:12:54]

Try jobs failed on following builders:
  ios-device on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device/builds...)
  mac_chromium_compile_dbg_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)

[Shao-Chuan Lee, 2016-10-05 06:24:22]

The CQ bit was checked by shaochuan@chromium.org

[Shao-Chuan Lee, 2016-10-05 06:24:23]

The patchset sent to the CQ was uploaded after l-g-t-m from
toyoshim@chromium.org, isherman@chromium.org
Link to the patchset: https://codereview.chromium.org/2392263002/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2016-10-05 06:24:43]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-05 08:39:52]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-10-05 08:41:36]

Description was changed from

==========
Enable MidiManagerWinrt by default on Windows 10

Added runtime flag to disable the new backend.

BUG=645403
==========

to

==========
Enable MidiManagerWinrt by default on Windows 10

Added runtime flag to disable the new backend.

BUG=645403

Committed: https://crrev.com/e041dc3faab67129c30b9c29d7e7ae74997ee0fd
Cr-Commit-Position: refs/heads/master@{#423116}
==========

[commit-bot: I haz the power, 2016-10-05 08:41:37]

Patchset 2 (id:??) landed as
https://crrev.com/e041dc3faab67129c30b9c29d7e7ae74997ee0fd
Cr-Commit-Position: refs/heads/master@{#423116}