I think we can punt these to a later phase. See  Issue 730958 .

This is just an NSAlert on Mac. I don't feel strongly that all NSAlerts must be purged before rolling out the rest of Harmony, but most of these are simple to wire up anyway.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cfb8556546fdcaa1419452903e8c061454d4af78

commit cfb8556546fdcaa1419452903e8c061454d4af78
Author: Elly Fong-Jones <ellyjones@chromium.org>
Date: Tue Jul 25 16:41:37 2017

macviews: wire extension uninstall dialog

This dialog appears when uninstalling an extension.

Bug:  728168 
Change-Id: If3955b1ef3e0158efb6e3c665de63857765f9a5f
Reviewed-on: https://chromium-review.googlesource.com/575837
Reviewed-by: Ben Wells <benwells@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#489336}
[modify] https://crrev.com/cfb8556546fdcaa1419452903e8c061454d4af78/chrome/browser/extensions/extension_uninstall_dialog.h
[modify] https://crrev.com/cfb8556546fdcaa1419452903e8c061454d4af78/chrome/browser/ui/BUILD.gn
[modify] https://crrev.com/cfb8556546fdcaa1419452903e8c061454d4af78/chrome/browser/ui/cocoa/extensions/extension_uninstall_dialog_cocoa.mm
[modify] https://crrev.com/cfb8556546fdcaa1419452903e8c061454d4af78/chrome/browser/ui/views/extensions/extension_uninstall_dialog_view.cc