dbus: remove service name from ExportedObject

dbus: remove service name from ExportedObject

Well-known names in D-Bus are merely aliases to unique connection ids
maintained by the bus, they have no purpose in qualifying object paths
or interfaces and it's perfectly legimiate for a client to make
requests to the unique connection id (e.g. in response to a signal,
which does not reference the well-known name of the origin connection).

Remove the service_name member from dbus::ExportedObject, from its
constructor and from dbus::Bus::GetExportedObject and require code to
call dbus::Bus::RequestOwnership if a well-known name is desired. This
requires making that function callable from the origin thread with
a callback for the return value.

BUG=chromium-os:27101
TEST=dbus_unittests

Change-Id: Ib91de8b68ad9c3b432e224a2c715f0c2ca1af463


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=125970

[satorux1, 2012-03-09 21:44:27]

LGTM

[commit-bot: I haz the power, 2012-03-09 22:40:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/keybuk@chromium.org/9668018/1017

[commit-bot: I haz the power, 2012-03-10 01:12:54]

Change committed as 125970