GitLab

This CL removes current uses of the drag and drop flag
since they have been in stable use for several years now.

This drag and drop flag will be used to continue adding
drag and drop features in M85.

Bug: 1087844
Change-Id: I6b4b48ca3d95ede89cd51b76c0e24acad4fddcc3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2233723Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776215}