WindowStateAnimator/ViewRoot: Move surface resizing to client

The bounds on the client surface are controlled by higher levels of
the hierarchy and so the client can use whatever Surface size it wants
on its node. We move the SurfaceControl setSize call to the client,
following 3 sort of ideas:

1. Project to make relayout window async, but currently it is used as a
sync point for resizing, resizing on client, one problem solved!
2. WM Shouldn't do what it doesnt have to for clients
3. Totally move management of lowest level Surface to client
   clean up lots of WM code (see WindowStateAnimator slimming project)

In the future maybe we don't need to set the SurfaceControl size at all
and the client can just set its buffer size, but it may produce some
differences in geometry handling on the server so I want to maintain
the old semantics for this CL.

Bug: 161937501
Test: Existing tests pass
Change-Id: Icebd94f8443fdbe9f0e6968bc35bbb0504a1520c