LayoutLib.Create: support Outer_Inner_Delegate renaming.

When generating delegates, LayoutLib.Create support renaming
inner classes. Only one level of inner class is supported.

The method Outer$Inner#get(...) generates a call to:
  static Outer_Inner_Delegate#get(Outer instance, Outer$Inner instance, ...)

Change-Id: Ie70f2b8e5e5f311ed9c7f26b7f64637ae6157a51