Oops I closed the other one prematurely. Adding a blocking just for housekeeping.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/97f8bd52b80fb4847af24c4a8a4a424da737716a

commit 97f8bd52b80fb4847af24c4a8a4a424da737716a
Author: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Date: Fri Jun 16 05:54:20 2017

webshare-target: Introduce ShareTarget class

1. Introduces a move-only ShareTarget class.
2. Refactor ShareServiceImpl to use ShareTarget.
  3.1. Pass a ShareTarget vector to ShowPicker.
  3.2. Modify picker's callback to return a ShareTarget. ShareTarget includes
       the URL template so we avoid an extra dictionary lookup when it returns.
4. Fix tests.
  4.1. Add PickTarget function to ShareServiceImplUnittest that picks a target
       based on the URL.

Bug:  716957 ,  717323 

Change-Id: If28d0a7576644f1501afdf9441c2f8845d9935d6
Reviewed-on: https://chromium-review.googlesource.com/517614
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Matt Giuca <mgiuca@chromium.org>
Cr-Commit-Position: refs/heads/master@{#479961}
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/BUILD.gn
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/ui/browser_dialogs.h
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/ui/views/webshare/webshare_target_picker_view.cc
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/ui/views/webshare/webshare_target_picker_view.h
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/ui/views/webshare/webshare_target_picker_view_unittest.cc
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/webshare/share_service_impl.cc
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/webshare/share_service_impl.h
[modify] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/webshare/share_service_impl_unittest.cc
[add] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/webshare/webshare_target.cc
[add] https://crrev.com/97f8bd52b80fb4847af24c4a8a4a424da737716a/chrome/browser/webshare/webshare_target.h