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This reverts commit d1224786.

Reason for revert: Suspect this CL breaks the build android-archive-rel. First failure: https://ci.chromium.org/p/chromium/builders/ci/android-archive-rel/16867
Compile error message: expand_owners.Error: The histogram Event.WaylandDragDrop.IncomingDataTransferTime must have a valid primary owner, i.e. a Googler with an @google.com or @chromium.org email address.

Original change's description:
> [ozone/wayland] Introduced the histogram to track time on data transfer.
>
> When data is dragged from another application into Chromium, there is a
> delay between mouse pointer crossing the window border and the actual
> OnDragEnter() called on the window.  The delay happens because the
> drag drop controller has to get the data, which implies at least one
> request to the Wayland server (the actual number of requests equals
> number of MIME types available in the data offer).
>
> Here a histogram is introduced to know what the real delays will be
> there in the wild.
>
> Bug: 1147413
> Change-Id: I2f3acc067f718ccb29d98ea1bf98b9f03efc2f7d
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2552864
> Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
> Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
> Commit-Queue: Alexander Dunaev <adunaev@igalia.com>
> Cr-Commit-Position: refs/heads/master@{#831251}

TBR=rjkroege@chromium.org,asvitkine@chromium.org,adunaev@igalia.com

Change-Id: I8a9f113d12f7c8ef7e71989cdb3949696a683901
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1147413
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2561958Reviewed-by: Maggie Cai <mxcai@chromium.org>
Commit-Queue: Maggie Cai <mxcai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#831254}