Pass SurfaceTrace through WM command in binary format.

Maybe we could add a pretty printer later, this is mostly,
intended for consumption by the test framework though, so for
now we defer parsing until that part.

Test: cts-tradefed run singleCommand cts -o --module CtsWindowManagerHostTestCases --test android.server.cts.SurfaceViewMovementTests#testSurfaceMovesWithParent
Change-Id: I75add6a9644cd4bbbb9d06aab97b9bf9f016655b