The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/48bc418e0dca4d9a4cf2a0faa9ebad92cca2e64f

commit 48bc418e0dca4d9a4cf2a0faa9ebad92cca2e64f
Author: Daichi Hirono <hirono@chromium.org>
Date: Tue Sep 12 00:09:28 2017

Send multiple files as drop data.

Previously Chrome sends only one URI to the client even if multiple files are
being dragged. The CL lets Chrome send multiple URIs for the case.

Bug:  758834 
Test: Drag and drop multiple files
Change-Id: I14d138c45fb06d509c628e3ad773e8848ca77891
Reviewed-on: https://chromium-review.googlesource.com/634775
Reviewed-by: David Reveman <reveman@chromium.org>
Commit-Queue: Daichi Hirono <hirono@chromium.org>
Cr-Commit-Position: refs/heads/master@{#501108}
[modify] https://crrev.com/48bc418e0dca4d9a4cf2a0faa9ebad92cca2e64f/components/exo/data_offer.cc