The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c8b2173b722aacf39f77de2f98b7a6336d2a3953

commit c8b2173b722aacf39f77de2f98b7a6336d2a3953
Author: constantina <constantina@google.com>
Date: Thu Dec 15 05:55:51 2016

Implemented stub ShareService mojo service, for navigator.share.

For desktop Linux, Chrome OS and Windows only.

Only active behind the
--enable-experimental-web-platform-features flag.

BUG= 668389 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2545323002
Cr-Commit-Position: refs/heads/master@{#438763}

[modify] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/browser/BUILD.gn
[modify] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/browser/chrome_content_browser_client.cc
[add] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/browser/webshare/OWNERS
[add] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/browser/webshare/share_service_impl.cc
[add] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/browser/webshare/share_service_impl.h
[add] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/browser/webshare/share_service_impl_unittest.cc
[modify] https://crrev.com/c8b2173b722aacf39f77de2f98b7a6336d2a3953/chrome/test/BUILD.gn

Marking for posterity that since this launch likely has privacy, security, testing implications it needs a type=Launch issue too to track approval.

This will be done by me before we enable these changes.

For anyone reading and curious, the Type=Launch system is explained here: https://docs.google.com/document/d/1Z9x-PBYgDaR99tsNLvhibZLeAwDR757Gor--I60ygeE/edit

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/31b8b23c68531e587060823f8c9814d52c63425a

commit 31b8b23c68531e587060823f8c9814d52c63425a
Author: constantina <constantina@google.com>
Date: Fri Jan 13 01:31:20 2017

Changed email suffixes in OWNERS from .com to .org

BUG= 668389 

Review-Url: https://codereview.chromium.org/2628043003
Cr-Commit-Position: refs/heads/master@{#443437}

[modify] https://crrev.com/31b8b23c68531e587060823f8c9814d52c63425a/chrome/browser/webshare/OWNERS

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2cfa55e24997bd05c573b163a630f1dac13cd184

commit 2cfa55e24997bd05c573b163a630f1dac13cd184
Author: constantina <constantina@google.com>
Date: Fri Jan 13 06:36:55 2017

Default share to Share Target: Partial impl. of Web Share for Desktop.

Currently only shares to a demo Share Target App hosted at
https://wicg.github.io/web-share-target/demos/sharetarget.html;
follow-up CL will have more share options.

BUG= 668389 

Review-Url: https://codereview.chromium.org/2564483003
Cr-Commit-Position: refs/heads/master@{#443510}

[modify] https://crrev.com/2cfa55e24997bd05c573b163a630f1dac13cd184/chrome/browser/webshare/share_service_impl.cc
[modify] https://crrev.com/2cfa55e24997bd05c573b163a630f1dac13cd184/chrome/browser/webshare/share_service_impl.h
[modify] https://crrev.com/2cfa55e24997bd05c573b163a630f1dac13cd184/chrome/browser/webshare/share_service_impl_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6e068f8014fdb411b63432c38aeb71fee20c7d18

commit 6e068f8014fdb411b63432c38aeb71fee20c7d18
Author: constantina <constantina@google.com>
Date: Mon Jan 23 04:51:30 2017

Add share_url_template field to Manifest.

Adds the share_url_template field to the Manifest object, for use with
the Web Share Target API.

For use in: codereview.chromium.org/2639463002/
BUG= 668389 

Review-Url: https://codereview.chromium.org/2637003002
Cr-Commit-Position: refs/heads/master@{#445322}

[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/common/manifest_manager_messages.h
[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/public/common/manifest.cc
[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/public/common/manifest.h
[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/renderer/manifest/manifest_parser.cc
[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/renderer/manifest/manifest_parser.h
[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/renderer/manifest/manifest_parser_unittest.cc
[modify] https://crrev.com/6e068f8014fdb411b63432c38aeb71fee20c7d18/content/renderer/manifest/manifest_uma_util.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/39e40676d8769fade0dca9fc864eb5e2ef80ee58

commit 39e40676d8769fade0dca9fc864eb5e2ef80ee58
Author: mgiuca <mgiuca@chromium.org>
Date: Tue Jan 31 04:16:49 2017

Add picker view for Web Share Target.

This is temporary UI which has not been approved by UX and will only be
used for an experimental feature behind a flag.

Hooked up to the share service for navigator.share on Desktop. Currently
does not show any real apps (just the dummy app which is currently
hard-coded in the share service).

BUG= 668389 

Review-Url: https://codereview.chromium.org/2644793006
Cr-Commit-Position: refs/heads/master@{#447187}

[modify] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/app/generated_resources.grd
[modify] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/ui/BUILD.gn
[modify] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/ui/browser_dialogs.h
[add] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/ui/views/webshare/webshare_target_picker_view.cc
[add] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
[modify] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/webshare/share_service_impl.cc
[modify] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/webshare/share_service_impl.h
[modify] https://crrev.com/39e40676d8769fade0dca9fc864eb5e2ef80ee58/chrome/browser/webshare/share_service_impl_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8bad70ff3383c7c71a96451d32aa93fc4a87b018

commit 8bad70ff3383c7c71a96451d32aa93fc4a87b018
Author: constantina <constantina@google.com>
Date: Thu Feb 02 07:42:20 2017

Add a pref name for share targets, and store their manifest data.

Adds a dictionary pref name, to store sites with manifests that
contain the share_url_template field; the key is the site origin, and
value is the value of share_url_template in the site's manifest.

Reads manifests after they have been parsed, for the share_url_template,
and stores the site and value under the pref name added.

Follow-up CL will read the pref store for the pref name added, and read
share targets in chrome/browser/webshare/share_service_impl.cc.

NO_DEPENDENCY_CHECKS=true
BUG= 668389 

Review-Url: https://codereview.chromium.org/2639463002
Cr-Commit-Position: refs/heads/master@{#447721}

[modify] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/browser/BUILD.gn
[modify] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/browser/extensions/bookmark_app_helper.cc
[modify] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/browser/profiles/profile.cc
[add] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/browser/webshare/share_target_pref_helper.cc
[add] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/browser/webshare/share_target_pref_helper.h
[add] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/browser/webshare/share_target_pref_helper_unittest.cc
[modify] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/common/pref_names.cc
[modify] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/common/pref_names.h
[modify] https://crrev.com/8bad70ff3383c7c71a96451d32aa93fc4a87b018/chrome/test/BUILD.gn

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444

commit e4c513e7ae3fd3a6c7752f8add47b93fb1c66444
Author: constantina <constantina@google.com>
Date: Tue Feb 07 02:14:10 2017

Picker takes a vector of pairs, and passes back the user chosen target.

Instead of vector of string16s, input is a vector of pairs of string16
and GURL where the first element is the app name, and the second is the
manifest URL of the app.

The manifest URL of the chosen target is passed back via a callback as
a string. The passed URL is Optional, so it can be null if the share is
cancelled.

BUG= 668389 

Review-Url: https://codereview.chromium.org/2667803002
Cr-Commit-Position: refs/heads/master@{#448512}

[modify] https://crrev.com/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444/chrome/browser/ui/browser_dialogs.h
[modify] https://crrev.com/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444/chrome/browser/ui/views/webshare/webshare_target_picker_view.cc
[modify] https://crrev.com/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
[modify] https://crrev.com/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444/chrome/browser/webshare/share_service_impl.cc
[modify] https://crrev.com/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444/chrome/browser/webshare/share_service_impl.h
[modify] https://crrev.com/e4c513e7ae3fd3a6c7752f8add47b93fb1c66444/chrome/browser/webshare/share_service_impl_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2883697c7814c4fca4675bd071161498b3b6aa27

commit 2883697c7814c4fca4675bd071161498b3b6aa27
Author: constantina <constantina@google.com>
Date: Tue Feb 07 08:04:02 2017

Store target app name in Web Share prefs, and remove external logic.

UpdateShareTargetInPrefs now stores the name field of the supplied
target's manifest in the Web Share target prefs. For the given share
target, adds the name to the dictionary associated with the target.

UpdateShareTargetInPrefs also handles the logic about web apps with
manifests that don't have the share_target field, entirely internally.

BUG= 668389 

Review-Url: https://codereview.chromium.org/2679523002
Cr-Commit-Position: refs/heads/master@{#448568}

[modify] https://crrev.com/2883697c7814c4fca4675bd071161498b3b6aa27/chrome/browser/extensions/bookmark_app_helper.cc
[modify] https://crrev.com/2883697c7814c4fca4675bd071161498b3b6aa27/chrome/browser/webshare/share_target_pref_helper.cc
[modify] https://crrev.com/2883697c7814c4fca4675bd071161498b3b6aa27/chrome/browser/webshare/share_target_pref_helper.h
[modify] https://crrev.com/2883697c7814c4fca4675bd071161498b3b6aa27/chrome/browser/webshare/share_target_pref_helper_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c5166d7cb235178146eee3431f7f64f0afc8aa4f

commit c5166d7cb235178146eee3431f7f64f0afc8aa4f
Author: mgiuca <mgiuca@chromium.org>
Date: Thu Feb 09 05:48:05 2017

Added unit test for WebShareTargetPickerView.

Also minor fix to avoid a DCHECK if double-clicking on an empty table
(which I don't think was possible to trigger anyway).

BUG= 668389 

Review-Url: https://codereview.chromium.org/2679533002
Cr-Commit-Position: refs/heads/master@{#449210}

[modify] https://crrev.com/c5166d7cb235178146eee3431f7f64f0afc8aa4f/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
[add] https://crrev.com/c5166d7cb235178146eee3431f7f64f0afc8aa4f/chrome/browser/ui/views/webshare/webshare_target_picker_view_unittest.cc
[modify] https://crrev.com/c5166d7cb235178146eee3431f7f64f0afc8aa4f/chrome/test/BUILD.gn

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/33f13724ed6d1a1a56b0f112767e62c36824e377

commit 33f13724ed6d1a1a56b0f112767e62c36824e377
Author: mgiuca <mgiuca@chromium.org>
Date: Mon Feb 13 02:02:54 2017

Do not build share_service_impl and associated test on Mac/Android.

These files are not used on those platforms and have a growing number of
conditional compilation statements which can be removed in a follow-up
CL.

BUG= 668389 

Review-Url: https://codereview.chromium.org/2695563002
Cr-Commit-Position: refs/heads/master@{#449905}

[modify] https://crrev.com/33f13724ed6d1a1a56b0f112767e62c36824e377/chrome/browser/BUILD.gn
[modify] https://crrev.com/33f13724ed6d1a1a56b0f112767e62c36824e377/chrome/browser/chrome_content_browser_client.cc
[modify] https://crrev.com/33f13724ed6d1a1a56b0f112767e62c36824e377/chrome/test/BUILD.gn

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5558f3f32e3182a29ef236242e2c50c37a3f6a1a

commit 5558f3f32e3182a29ef236242e2c50c37a3f6a1a
Author: constantina <constantina@google.com>
Date: Mon Feb 13 05:37:54 2017

Read share targets from prefstore, and filter by engagement.

New function, GetTargetsWithSufficientEngagement, called when browser
receives Share from renderer. Function collates all share targets and
their templates, and keeps targets that have a high enough engagement
score with the user.

Calls picker UI with this filtered list of targets.

BUG= 668389 

Review-Url: https://codereview.chromium.org/2664033002
Cr-Commit-Position: refs/heads/master@{#449911}

[modify] https://crrev.com/5558f3f32e3182a29ef236242e2c50c37a3f6a1a/chrome/browser/webshare/share_service_impl.cc
[modify] https://crrev.com/5558f3f32e3182a29ef236242e2c50c37a3f6a1a/chrome/browser/webshare/share_service_impl.h
[modify] https://crrev.com/5558f3f32e3182a29ef236242e2c50c37a3f6a1a/chrome/browser/webshare/share_service_impl_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f7077234f58cf96b6a9102691ce13cb28150cbab

commit f7077234f58cf96b6a9102691ce13cb28150cbab
Author: mgiuca <mgiuca@chromium.org>
Date: Tue Feb 14 01:45:42 2017

Remove conditional compile statements in ShareServiceImpl (and test).

These were previously added to allow this code to compile (but be
useless) on Mac and Android. As of r449905, these files are not compiled
at all on Mac and Android, so these if statements are no longer needed.

BUG= 668389 

Review-Url: https://codereview.chromium.org/2694643002
Cr-Commit-Position: refs/heads/master@{#450193}

[modify] https://crrev.com/f7077234f58cf96b6a9102691ce13cb28150cbab/chrome/browser/webshare/share_service_impl.cc
[modify] https://crrev.com/f7077234f58cf96b6a9102691ce13cb28150cbab/chrome/browser/webshare/share_service_impl.h
[modify] https://crrev.com/f7077234f58cf96b6a9102691ce13cb28150cbab/chrome/browser/webshare/share_service_impl_unittest.cc

This issue has been automatically relabelled type=task because type=launch-owp issues are now officially deprecated. The deprecation is because they were creating confusion about how to get launch approvals, which should be instead done via type=launch issues.

We recommend this issue be used for implementation tracking (for public visibility), but if you already have an issue for that, you may mark this as duplicate.

For more details see here: https://docs.google.com/document/d/1JA6RohjtZQc26bTrGoIE_bSXGXUDQz8vc6G0n_sZJ2o/edit

For any questions, please contact owencm, sshruthi, larforge

Do we have an Intent to Implement/etc for this? Or was it subsumed into another I2I ?

#20 https://groups.google.com/a/chromium.org/d/topic/blink-dev/_oUskZTzQxg/discussion

Launched in M71 on Android.

Will file separate feature bugs to ship WST on each other platform (which will be shipping individually).

Can we get those follow-up tickets to track for other platforms please?

Is there a way to detect if this API is available? I want to show the user a different flow only if it is.

There isn't currently a way to feature detect Web Share Target, only Web Share.

What is the use case? The user agent (browser) has full discretion whether to show a given web app in the Share list, so detecting Web Share Target may have limited usefulness.