Background
* On an org-owned device with a managed profile,
the admin can apply some user restrictions on the
personal profile (incl DISALLOW_USB_FILE_TRANSFER)
* When the admin applied DISALLOW_USB_FILE_TRANSFER,
the device should stop the existing 'File transfer'
mode USB connnection.
Change
* The broadcast recevier in UsbService should pick
up receive broadcast intents for all users.
Manual testing
* Set up device in COPE mode
* Turn on USB 'File transfer' via Settings
* Open internal storage on computer connected via USB
and browse some files on the device
* Apply DISALLOW_USB_FILE_TRANSFER
* Verify device no longer shows up in internal storage
Bug: 175757373
Test: manual testing
atest UsbBackendTest
Change-Id: I8d47e728a26ba99dc3b5223d0d7d29085484f8f0
3eadf0dbc9