With this CL, Editor starts calling IMM#updateCursorAnchorInfo iff IMM#isWatchingCursor(View) returns true. The performance regression should be negligible when IMM#isWatchingCursor(View) returns false. BUG: 14579622 Change-Id: Ib35a6f4201b26d837a6aa07d1204c9eb75404da1