Bug 897863 - [Buri][camera]It display abnormally when plug in USB to preview video
Bug 888799: Display message if callee is busy

Busy calls are now signaled by error, instead of call state. This
patch adds a related message to the TelephonyHelper for informing
the user.

The old code used to play a tone for 3 seconds and close the Call
dialog afterwards. We cannot do this any longer because TonePlayer
expects the Call dialog to be around, which has already been closed
when the error gets handled.

This patch also replaces the related test of the Dialer app by a new
one. The new test verifies that the Dialer app displays the correct
error message when the number is busy.

Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>
Merge pull request #11549 from tdz/bug-888799

Bug 888799: Display message if callee is busy r=etienne
Merge pull request #11177 from huchengtw-moz/camera/Bug_897863_camera_display_abnormally_when_plug_in_usb

Bug 897863 - [Buri][camera]It display abnormally when plug in USB to pre..., r=djf
Bug 903363 - [HD] Arrows on utility tray are still SD