Reland "Move JavaInputStreamAdaptor into third_party and add a LICENSE file."

This is a reland of eac2d518bd5f242597d91d81eb60b020ae35dae4

The aosp folder was added to the google3 roller include_patterns list:
http://cl/315274044

Original change's description:
> Move JavaInputStreamAdaptor into third_party and add a LICENSE file.
>
> Change-Id: I723b15fbcf3343559fb5a3fe3015cf3db96e2841
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/294696
> Reviewed-by: Heather Miller <hcm@google.com>
> Commit-Queue: John Stiles <johnstiles@google.com>

Change-Id: I27ac16c3ac05fbee1473af886379e95492302d50
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/295000
Reviewed-by: Heather Miller <hcm@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
6 files changed