Fix scanning of modified files.
Fix scanning of modified files.

When a media file, particularly a music file, is updated, the media
scanner should use the correct Uri to update it, and not the generic
files Uri. Otherwise, things like artist and album name will not
be properly updated.

Change-Id: I576629c51282bfbeb61c23f1e43b072700084a6c

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base