[SuwLib] Implement pattern drawable background

- Implement the pattern background for GLIF using a custom drawable.
  The drawable draws the paths manually as specified in the SVG, for
  backwards compatibility.
- Use a FrameLayout subclass to draw the custom status bar background
  in the case of phone layouts, and set draw the background directly
  for tablet / clamshell layouts.

Bug: 25650709
Change-Id: I527bb47efa143ec43c1030b57087fd2414d7045b