Support USB device hotplug on Android.

Support USB device hotplug on Android.

This patch registers a broadcast receiver for the UsbManager's device
attach and detach events.

BUG=601627
Committed: https://crrev.com/16001d9033faf76fe53926cc6d4d25f6c9b12aca
Cr-Commit-Position: refs/heads/master@{#396995}

[Reilly Grant (use Gerrit), 2016-05-28 00:01:30]

reillyg@chromium.org changed reviewers:
+ juncai@chromium.org

[Reilly Grant (use Gerrit), 2016-05-28 00:01:30]

Please take a look.

[juncai, 2016-05-31 17:37:48]

LGTM.

[Reilly Grant (use Gerrit), 2016-05-31 17:57:02]

The CQ bit was checked by reillyg@chromium.org

[commit-bot: I haz the power, 2016-05-31 17:57:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2017273002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2017273002/1

[commit-bot: I haz the power, 2016-05-31 20:08:08]

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

[commit-bot: I haz the power, 2016-05-31 20:08:09]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/linux_androi...)

[Reilly Grant (use Gerrit), 2016-05-31 22:44:11]

The CQ bit was checked by reillyg@chromium.org

[Reilly Grant (use Gerrit), 2016-05-31 22:44:11]

The patchset sent to the CQ was uploaded after l-g-t-m from juncai@chromium.org
Link to the patchset: https://codereview.chromium.org/2017273002/#ps20001
(title: "Add dependency on //device/usb:java.")

[commit-bot: I haz the power, 2016-05-31 22:44:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2017273002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2017273002/20001

[commit-bot: I haz the power, 2016-06-01 00:44:42]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-01 00:45:47]

Description was changed from

==========
Support USB device hotplug on Android.

This patch registers a broadcast receiver for the UsbManager's device
attach and detach events.

BUG=601627
==========

to

==========
Support USB device hotplug on Android.

This patch registers a broadcast receiver for the UsbManager's device
attach and detach events.

BUG=601627

Committed: https://crrev.com/16001d9033faf76fe53926cc6d4d25f6c9b12aca
Cr-Commit-Position: refs/heads/master@{#396995}
==========

[commit-bot: I haz the power, 2016-06-01 00:45:48]

Patchset 2 (id:??) landed as
https://crrev.com/16001d9033faf76fe53926cc6d4d25f6c9b12aca
Cr-Commit-Position: refs/heads/master@{#396995}