trimmed release 18.0.1025.162
trimmed release 19.0.1084.52
trimmed release 20.0.1132.47
trimmed release 20.0.1132.57
trimmed release 21.0.1180.60
Clear drag caret if dragdrop preventedDefault

DRQS 31916022
Looks like the clear() was simply missing in this case.  Can probably upstream
this if we can figure out how to test it.
trimmed release 23.0.1271.97
trimmed release 24.0.1312.52
trimmed release 24.0.1312.56
trimmed release 25.0.1364.84
trimmed release 25.0.1364.152
trimmed release 26.0.1410.33
trimmed release 26.0.1410.43
trimmed release 27.0.1453.73
trimmed release 27.0.1453.94
trimmed release 27.0.1453.110
trimmed release 28.0.1500.95
Rebase 'bugfix/clearDragCaret' from upstream/20.0.1132.57 onto upstream/28.0.1500.95
trimmed release 29.0.1547.76
trimmed release 30.0.1599.101