Some More Holo Theme Test Stuff

Bug 5404694

- Added code to create a "diff" image that shows pixels that don't
  match as red. When the bitmap sizes are different, it uses blue
  when pixels are present in the generated bitmap but not in the
  reference, and green when in the reference image but not in the
  generated one.

- Remove the AlertDialog tests, since they appear to change size
  depending on the screen size. Even though we reattach them to
  a fixed size container, they still don't behave as expected.
  I'll have to look at these again closer.

- Instead of quitting on the first failure...collect all the
  failures and report them all.

- Add a task to display the density DPI of the device...

- Fix the Appt flags so they properly include ldpi resources of
  120. Generate the ldpi resources and them...

- Do the same for TV DPI but the emulator kept crashing when
  I installed the tests, so these aren't tested.

Change-Id: I92450dc134bc4408c60444aea84230cabd1c033e
2483 files changed