xiaochu@ will probably be interested in this as well.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/imageloader/+/afa8fb0b89b6ab94fa94e951021ccaa952d44377

commit afa8fb0b89b6ab94fa94e951021ccaa952d44377
Author: Eric Caruso <ejcaruso@chromium.org>
Date: Tue Oct 31 06:21:29 2017

imageloader: add GetComponentMetadata D-Bus method

This allows us to pack some information into the imageloader
manifest that will be signed but which we can access before we
actually load components. This information might be used to make
decisions about whether or not we actually do need to load the
component.

BUG=chromium:773471
TEST=deploy on device and test, new unit tests

Change-Id: Ia5e9f963e12dcd443851773f428d0d9f6c2104d8
Reviewed-on: https://chromium-review.googlesource.com/737428
Commit-Ready: Eric Caruso <ejcaruso@chromium.org>
Tested-by: Eric Caruso <ejcaruso@chromium.org>
Reviewed-by: Greg Kerr <kerrnel@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-metadata/image.squash
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-non-dict-metadata/imageloader.json
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/imageloader_impl.h
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/test_utilities.cc
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/imageloader.h
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/imageloader_impl.cc
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-metadata/imageloader.json
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-non-dict-metadata/manifest.json
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/component.cc
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-bad-metadata/table
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-metadata/manifest.json
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/imageloader_unittest.cc
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-metadata/imageloader.sig.2
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/component.h
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-non-dict-metadata/image.squash
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-bad-metadata/imageloader.sig.2
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-bad-metadata/manifest.json
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/test_utilities.h
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-bad-metadata/imageloader.json
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-bad-metadata/image.squash
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-metadata/table
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/imageloader.cc
[modify] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/dbus_adaptors/org.chromium.ImageLoaderInterface.xml
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-non-dict-metadata/imageloader.sig.2
[add] https://crrev.com/afa8fb0b89b6ab94fa94e951021ccaa952d44377/testdata/adb-with-non-dict-metadata/table

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot