Targeting M-72 for tast tests.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/71a4de04dbef38f74a64cd861b69d53fdba6d5ba

commit 71a4de04dbef38f74a64cd861b69d53fdba6d5ba
Author: Joel Hockey <joelhockey@chromium.org>
Date: Fri Nov 30 04:09:16 2018

FilesApp: utils needed for crostini sharing tast test

To be used in tast test:
https://chromium-review.googlesource.com/c/chromiumos/platform/tast-tests/+/1351973

* Added chrome.fileManagerPrivate.unsharePathWithCrostini.  This function
  complements the existing fileManagerPrivate.sharePathsWithCrostini.

* Added util.getEntries which returns a Promise with an object of
  all entries of a provided volume keyed by fullPath.  This is a
  handy wrapper over the existing util.readEntriesRecursively.

Bug:  907231 
Change-Id: Ieccdc76a6457fed44d85633e9a02c658424b967d
Reviewed-on: https://chromium-review.googlesource.com/c/1354755
Reviewed-by: Stuart Langley <slangley@chromium.org>
Reviewed-by: Ben Wells <benwells@chromium.org>
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612555}
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/chrome/browser/chromeos/extensions/file_manager/private_api_misc.h
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/chrome/common/extensions/api/file_manager_private.idl
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/chrome/common/extensions/api/file_manager_private_internal.idl
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/chrome/renderer/resources/extensions/file_manager_private_custom_bindings.js
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/chrome/test/data/extensions/api_test/file_browser/crostini_test/test.js
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/extensions/browser/extension_function_histogram_value.h
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/third_party/closure_compiler/externs/file_manager_private.js
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/tools/metrics/histograms/enums.xml
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/ui/file_manager/file_manager/common/js/BUILD.gn
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/ui/file_manager/file_manager/common/js/util.js
[modify] https://crrev.com/71a4de04dbef38f74a64cd861b69d53fdba6d5ba/ui/file_manager/file_manager/test/js/chrome_file_manager_private_test_impl.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/89d774241f691102c750100831b6404b3e7c8b9b

commit 89d774241f691102c750100831b6404b3e7c8b9b
Author: Joel Hockey <joelhockey@chromium.org>
Date: Tue Dec 04 04:32:07 2018

tast-tests: Test sharing files with crostini

* Add chrome.ExtensionBackgrounPageURL

* Add static vm.Container.DefaultContainerCommand function
  to allow reuse of code for running a vsh command
  in the default container.

* vm.CrostiniFiles test updated to create files within
  Downloads and share/unshare them with the container,
  and verify files are accessible in the container as
  expected.

BUG= chromium:907231 
TEST=vm.CrostiniFiles

Change-Id: I2573125da2db8371f0bc181e467d971bfdd0bb44
Reviewed-on: https://chromium-review.googlesource.com/1351973
Commit-Ready: Joel Hockey <joelhockey@chromium.org>
Tested-by: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>

[modify] https://crrev.com/89d774241f691102c750100831b6404b3e7c8b9b/src/chromiumos/tast/local/vm/vm.go
[modify] https://crrev.com/89d774241f691102c750100831b6404b3e7c8b9b/src/chromiumos/tast/local/bundles/cros/vm/crostini_files.go
[modify] https://crrev.com/89d774241f691102c750100831b6404b3e7c8b9b/src/chromiumos/tast/local/vm/container.go
[modify] https://crrev.com/89d774241f691102c750100831b6404b3e7c8b9b/src/chromiumos/tast/local/chrome/chrome.go
[modify] https://crrev.com/89d774241f691102c750100831b6404b3e7c8b9b/src/chromiumos/tast/local/vm/concierge.go

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/43234d41878568112e0c473e77423dcb189a5b7a

commit 43234d41878568112e0c473e77423dcb189a5b7a
Author: Joel Hockey <joelhockey@chromium.org>
Date: Wed Dec 05 09:13:34 2018

tast-tests: Update CrostiniFiles to work with MyFilesVolume

Share files from MyFiles rather than Downloads.

Fix JS promise rejection in share/unshare

BUG= chromium:907231 
BUG= chromium:911718 
TEST=vm.CrostiniFiles

Change-Id: Id4baaa1777bceac2771aaac52059234619139a5d
Reviewed-on: https://chromium-review.googlesource.com/1362261
Commit-Ready: Joel Hockey <joelhockey@chromium.org>
Tested-by: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>

[modify] https://crrev.com/43234d41878568112e0c473e77423dcb189a5b7a/src/chromiumos/tast/local/bundles/cros/vm/crostini_files.go

Still TODO: verify writing a file from container and having it show up in FilesApp.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/e643f6646579eb744b97be319968c79aef236cde

commit e643f6646579eb744b97be319968c79aef236cde
Author: Joel Hockey <joelhockey@chromium.org>
Date: Fri Dec 07 06:06:40 2018

tast-test: write a shared file from crostini container

BUG=chromium:891146
BUG= chromium:907231 
TEST=vm.CrostiniFiles

Change-Id: Iea7404b21f962d28abc229946d4392a8e43ac8a6
Reviewed-on: https://chromium-review.googlesource.com/1364590
Commit-Ready: Joel Hockey <joelhockey@chromium.org>
Tested-by: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>

[modify] https://crrev.com/e643f6646579eb744b97be319968c79aef236cde/src/chromiumos/tast/local/bundles/cros/vm/crostini_files.go