Revert of Gracefully handle mismatched drag ended notifications. (patchset #3 id:40001 of https://codereview.chromium.org/839253002/)
Reason for revert:
Questions arose on the review after the CL entered CQ (and the author went to bed). Reverting until we're all aligned.
Original issue's description:
> Gracefully handle mismatched drag ended notifications.
>
> Should the embedder end up signalling the end of a drag operation
> via EventHandler::dragSourceEndedAt(), but Blink has initiated
> another drag operation, for whatever reason or source, then catch
> this and gracefully bail.
>
> R=jochen,rbyers
> BUG=445308
>
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=188256
TBR=dcheng@chromium.org,jochen@chromium.org,rbyers@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=445308
Review URL: https://codereview.chromium.org/841533004
git-svn-id: svn://svn.chromium.org/blink/trunk@188272 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed
