[Service] Make application.getCurrentApplication work

[Service] Make application.getCurrentApplication work

The appInfo.id of application.getCurrentApplication()
should be its own service id, not 'org.tizen.chromium-efl.wrt-service'.

The object returned from application.getCurrentApplication()
is non re-writable. So, new object is needed to modify the id.

Btw, broadcast APIs need to have daemon id because they are working
on app id of current process.

Change-Id: I71a62f9dc0bccd68fa7e2b9269a2543e651ec64a
Signed-off-by: Youngsoo Choi <kenshin.choi@samsung.com>