reland "CrOS: Fix appearance of notification toasts when sliding out via gesture"

reland "CrOS: Fix appearance of notification toasts when sliding out via gesture"

This re-lands 3d7851ff607c370234e4f93ecf6
original review: https://codereview.chromium.org/2849523005

This converts SlideOutView to SlideOutController, which provides all the
same functionality but can be added to any view rather than just those
that extend it.

It allows the target view to control the layer that's sliding out. For
toasts, that is the widget's layer. For notifications inside the message
center, that will continue to be the NotificationView itself.

BUG=716429
Review-Url: https://codereview.chromium.org/2849523005

Review-Url: https://codereview.chromium.org/2855763003
Cr-Original-Commit-Position: refs/heads/master@{#468962}
Review-Url: https://codereview.chromium.org/2892183002 .
Cr-Commit-Position: refs/branch-heads/3071@{#630}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/dd91791606f52ac9b6d627b7ed3fe67ab52db50d

[Evan Stade, 2017-05-19 15:08:11]

Description was changed from

==========
reland "CrOS: Fix appearance of notification toasts when sliding out via
gesture"

This re-lands 3d7851ff607c370234e4f93ecf6
original review: https://codereview.chromium.org/2849523005

This converts SlideOutView to SlideOutController, which provides all the
same functionality but can be added to any view rather than just those
that extend it.

It allows the target view to control the layer that's sliding out. For
toasts, that is the widget's layer. For notifications inside the message
center, that will continue to be the NotificationView itself.

BUG=716429
Review-Url: https://codereview.chromium.org/2849523005

Review-Url: https://codereview.chromium.org/2855763003
Cr-Commit-Position: refs/heads/master@{#468962}
(cherry picked from commit d3c675e53e8b9c17d77e47107d04df8d0baae069)
==========

to

==========
reland "CrOS: Fix appearance of notification toasts when sliding out via
gesture"

This re-lands 3d7851ff607c370234e4f93ecf6
original review: https://codereview.chromium.org/2849523005

This converts SlideOutView to SlideOutController, which provides all the
same functionality but can be added to any view rather than just those
that extend it.

It allows the target view to control the layer that's sliding out. For
toasts, that is the widget's layer. For notifications inside the message
center, that will continue to be the NotificationView itself.

BUG=716429
Review-Url: https://codereview.chromium.org/2849523005

Review-Url: https://codereview.chromium.org/2855763003
Cr-Original-Commit-Position: refs/heads/master@{#468962}
Review-Url: https://codereview.chromium.org/2892183002 .
Cr-Commit-Position: refs/branch-heads/3071@{#630}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/dd91791606f52ac9b6d627b7ed3f...
==========

[Evan Stade, 2017-05-19 15:08:12]

Committed patchset #1 (id:1) manually as
dd91791606f52ac9b6d627b7ed3fe67ab52db50d.