Change requestSurface() to return surface_id

libwindowmanager set surface_id to QT_IVI_SURFACE_ID for now,
but the process will be removed in the future because it depends on Qt.
So requestSurface() is changed to return surface_id.
If requestSurface() occurs errors, negative value is returned.
It is necessary to use return value of requestSurface() for the applications.

Change-Id: Ice2a5fe152a3957f0132e0358ebd8a535bdfa7ce
Signed-off-by: Yuta Doi <yuta-d@witz-inc.co.jp>

0 files changed, 0 insertions, 0 deletions