Delete dragdrop_support.js from web platform tests.
The helper functions are redundant as they implement no extra logic.
So, removing these functions and replacing them by adding logs and
event listeners directly.
Bug: 336911513
Change-Id: Icebc99f432ff279c19cbe95e96143b9d67dbf67a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5487578
Commit-Queue: Kashish Jain kashishjain@microsoft.com
Reviewed-by: Sanket Joshi sajos@microsoft.com
Reviewed-by: Anupam Snigdha snianu@microsoft.com
Reviewed-by: Christine Hollingsworth christinesm@chromium.org
Cr-Commit-Position: refs/heads/main@{#1293052}