The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/66e0d890fcc9d2f24995e8880f82cc3cccb4cf2d

commit 66e0d890fcc9d2f24995e8880f82cc3cccb4cf2d
Author: Jay Civelli <jcivelli@google.com>
Date: Tue Dec 05 01:05:10 2017

Servicifying RemovableStorageWriter.

Made RemovableStorageWriter a chrome service and changed
ImageWriterUtilityClient to use the service instead of
UtilityProcessMojoClient, which is being deprecated.

ImageWriterUtilityClient now requires a service_manager::Connector
when created. As a result, extensions::image_writer::Operation which
creates an ImageWriterUtilityClient and all its derived classes now
also take a connector.

This patch was tested manually on Windows and Mac by using the Chrome
OS recovery tool [1] and writing a recovery image on a USB stick.

[1] http://bit.ly/2jFtsZZ

Bug:  790024 
Change-Id: Ie31c123e189ccd0134f9fc63a5dd7238011bebca
Reviewed-on: https://chromium-review.googlesource.com/786257
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Jay Civelli <jcivelli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521563}
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