The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/af461a2d3b3a487c28cec7c5392da1d26df81f97

commit af461a2d3b3a487c28cec7c5392da1d26df81f97
Author: nya <nya@chromium.org>
Date: Thu Mar 09 04:05:44 2017

mediaview: Add a typemap for arc::mojom::ChangeType.

Also fixes storage/browser/BUILD.gn, which is needed to pass gn gen --check.

BUG= chromium:698623 
TEST=gn gen --check

Review-Url: https://codereview.chromium.org/2727113002
Cr-Commit-Position: refs/heads/master@{#455662}

[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/chrome/browser/chromeos/arc/fileapi/arc_documents_provider_root_unittest.cc
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner.cc
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner.h
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/BUILD.gn
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/DEPS
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/common/OWNERS
[add] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/common/file_system.typemap
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/common/typemaps.gni
[add] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/file_system/OWNERS
[add] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/file_system/file_system_struct_traits.cc
[add] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/file_system/file_system_struct_traits.h
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/test/fake_file_system_instance.cc
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/components/arc/test/fake_file_system_instance.h
[modify] https://crrev.com/af461a2d3b3a487c28cec7c5392da1d26df81f97/storage/browser/BUILD.gn

This is not strictly required to M58, but since I'm going to make some bug fix soon (https://codereview.chromium.org/2726373002/) let me request cherry-pick to avoid possible merge conflicts.

This bug requires manual review: DEPS changes referenced in bugdroid comments.
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), bhthompson@(cros), govind@(desktop)

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