tree 36f49e3a0d37052354581e3e7970d6162471e65a
parent 4260098e02c8ea329fc949c1b74c6c974fec8770
author Ivan Chiang <chiangi@google.com> 1547119741 +0800
committer Ivan Chiang <chiangi@google.com> 1548056693 +0800

Add new column into Root to get the supported query args

DocumentsContract:
- Add @Public column Root#COLUMN_QUERY_ARGS
- Update java doc

DocumentsProvider:
- Update java doc

FileSystemProvider & ExternalStorageProvider
- Add supported query args into Roots

Bug: 121234248
Test: manual
Change-Id: Ia944200ee1a44d75c9ad683564218e3d0dcef885