switch ResearchLogger output to json.

use multiple logging files, clean up internal nested class structure.

multi-project commit with I1813b6710ef586d96cf8936662f58b870040d6e5

Bug: 6188932
Change-Id: I438790e28f74747c4c1a48a20c1942a0fd818b6c
3 files changed
tree: 0e45a26b09f3c33ee42ff3f7035179d45abbf475
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk