VisualDiff: Show less information about ref nodes

Authored by Tchanders on Aug 11 2017, 11:26 PM.

Description

VisualDiff: Show less information about ref nodes

If a ref node's index changes (e.g. because an earlier
reference was inserted/removed), only describe the index
change.

(Currently the edit diffs in the save dialog don't show
any change if only the index has changed. Perhaps ideally
that is what would happen here eventually.)

Bug: T170235
Change-Id: I2513bb82099a92529516e4e217e61a2d0a2dd43b

Details