Remove owerUid from WindowSurfaceController constructor

The ownerUid is already available inside WindowSession and we obtain the
ownerPid from it. To make things consitent, this change removes the
redundant parameter passed to WindowSurfaceController.

Bug: 170911969
Test: System bootup
Change-Id: I2f707d195e72f3ee7b8996de00d0d026c6a2dd1b