I think this is actually consistent with existing behavior - The Media View folders only enable the Open intents in the dropdown and none of the Share intents.

fukino@ - Is this a technical limitation (with the read-only view) or is this something we can add?

Yes I suppose it is a technical limitation due to  issue 740063 .

Files in media view are exposed as virtual files with externalfile: URLs.
nya@: Correct me if I'm wrong.
hashimoto@, nya@: Will  issue 740063  make files in media view accessible from ARC container?

fukino@ - Are we able to add the share intent in Media Views now that 740063 is fixed?

I'm sorry for a late response.
Yes, this issue should have been fixed on M64.
mkarkada@, could you verify it on M64 or later? Thanks!

I'm still not seeing Share menu options for Images folder. Checked on M64 beta (10176.54.0, 64.0.3282.101) and M65 dev (10323.2.0, 65.0.3325.11).

To add a point to my comment in #5, Open menu options with android apps are not available for files in Images folder.

Deleted: Screenshot 2018-01-24 at 11.10.05 AM.png 225 KB

	Screenshot 2018-01-24 at 11.10.05 AM.png 225 KB View Download

I'm sorry I misunderstood the issue.
For now we don't support opening files in media view by Android apps.
To support it, we need to handle media view files to expose ARC url.
https://cs.chromium.org/chromium/src/chrome/browser/chromeos/file_manager/path_util.cc?type=cs&q=ConvertPathToArcUrl&sq=package:chromium&l=90

weifang@, can we punt this feature to M66?
This seems to be a good starter bug involving filesystem integration.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/667150e532b9abe93dbe8b1941e59039b962bef2

commit 667150e532b9abe93dbe8b1941e59039b962bef2
Author: Satoshi Niwa <niwa@google.com>
Date: Tue Feb 13 10:13:55 2018

Create an async version of ConvertPathToArcUrl.

Unlike ConvertPathToArcUrl, the new version can convert file paths under ARC media directories as well.

Bug: chromium:767982
Bug:  chromium:748186 
Test: unit_tests
Change-Id: I3356b12884766c0314d5faafdff5cc8beb21fb9b
Reviewed-on: https://chromium-review.googlesource.com/906222
Commit-Queue: Satoshi Niwa <niwa@chromium.org>
Reviewed-by: Daichi Hirono <hirono@chromium.org>
Reviewed-by: Shuhei Takahashi <nya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536320}
[modify] https://crrev.com/667150e532b9abe93dbe8b1941e59039b962bef2/chrome/browser/chromeos/file_manager/path_util.cc
[modify] https://crrev.com/667150e532b9abe93dbe8b1941e59039b962bef2/chrome/browser/chromeos/file_manager/path_util.h
[modify] https://crrev.com/667150e532b9abe93dbe8b1941e59039b962bef2/chrome/browser/chromeos/file_manager/path_util_unittest.cc

<files-triage>

<files-triage> Re-assigning to Joel while Noel is on vacation.