Add new public attribute mPointerId to PointerTracker

It is easier to track each pointer if a PointerTracker object keeps
its pointer id.

Bug: 2910379
Change-Id: If3e3b0cf3d834d22302598f4d85d54c9a4ce92ba
2 files changed
tree: b21464276be663c3e97f0c8158168ea35ad12d7b
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. Android.mk
  6. CleanSpec.mk