Optimize JNI calls for FuseDaemon

Create a wrapper class FileLookupResult to contain transforms,
transforms completion status and ioPath for a file and uid. Replace
the methods GetTransforms and GetIoPath of MediaProviderWrapper with
a single method FileLookup which returns a FileLookupResult object
from MediaProvider.

Test: atest TranscodeTest
Bug: 169412244
Change-Id: If3dad48e55d26fa3b544b68bb4ae5d623583a534
5 files changed