Append all FUSE MediaProvider methods with ForFuse

Some MediaProvider methods that are intended to be called from FUSE
should never be called internally by MediaProvider, like
getRedactionRanges(String). This change makes developer aware that these
methods are intended to be called by FUSE.

Test: adb logcat | grep "Error caching method: " # nothing
Change-Id: Idad71742649e82da1496a439e5a92055bd569c0e
2 files changed