WinScope: Support missing layers

The new sf layer transform changes breaks when missing layers are added since they do not contain transform
data. Fix this is by adding a transform when creating missing layers.

Also set the transform type when populating transform matrices so they are displayed as IDENTITY.

Test: Open trace from bug
Fixes: 130886882
Change-Id: I85f52bd3dc9174499c4a4840c6b5e80555f28fc7
2 files changed