1. Added an empty state for pages that are being rendered.
2. Fixed a NPA on a binder thread when destoroying the
remote print adapter.
3. Fixed a rare crash when the print activity gets an
activity class callback while initializing.
4. Changed the preview pages on phone in land to four.
5. Fixed a flicker from a list of pages to an empty state
and then back to the list of pages.
bug:15704969
bug:16966145
Change-Id: I0eea2f30a102d8fefcbf90187fa6d8612fb19434
Conflicts:
packages/PrintSpooler/src/com/android/printspooler/widget/PageContentView.java
6552bf3da6