The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c6a29b98fa8da4098539d3a9a9dbc498552ea041

commit c6a29b98fa8da4098539d3a9a9dbc498552ea041
Author: Blake O'Hare <blakeo@chromium.org>
Date: Wed Jan 31 04:13:07 2018

Add callback support to KeyboardController when setting container type

Currently, there is a field on KeyboardController for enqueuing a
container type change. Eventually we want to support invoking a JS
callback to notify the extension when a keyboard mode changes.

This is the first step in that direction. Instead of persisting a
single enum value for the enqueued container behavior, it tracks both
the type and a callback handle. This QueuedContainerBehavior object
will invoke the callback once it goes out of scope.

Change-Id: Iea4e96259314a34d31661342024a23617a9f4b74
Bug:  806189 
Reviewed-on: https://chromium-review.googlesource.com/888119
Commit-Queue: Blake O'Hare <blakeo@chromium.org>
Reviewed-by: Yuichiro Hanada <yhanada@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533197}
[modify] https://crrev.com/c6a29b98fa8da4098539d3a9a9dbc498552ea041/ui/keyboard/BUILD.gn
[modify] https://crrev.com/c6a29b98fa8da4098539d3a9a9dbc498552ea041/ui/keyboard/keyboard_controller.cc
[modify] https://crrev.com/c6a29b98fa8da4098539d3a9a9dbc498552ea041/ui/keyboard/keyboard_controller.h
[modify] https://crrev.com/c6a29b98fa8da4098539d3a9a9dbc498552ea041/ui/keyboard/keyboard_controller_unittest.cc
[add] https://crrev.com/c6a29b98fa8da4098539d3a9a9dbc498552ea041/ui/keyboard/queued_container_type.cc
[add] https://crrev.com/c6a29b98fa8da4098539d3a9a9dbc498552ea041/ui/keyboard/queued_container_type.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70

commit cc8dd92b43ecc60c17d388c1f5fd408d5587cb70
Author: Blake O'Hare <blakeo@chromium.org>
Date: Tue Feb 06 03:28:58 2018

Pass the setMode JS callback to the KeyboardController.

Currently it is being invoked immediately. This will invoke it at a
more appropriate time (upon showing the new keyboard layout animation
when the keyboard content window still virtually no opacity).

Bug:  806189 
Change-Id: I19464b1bdc9eb688888d96e98f890d12d67a4a3d
Reviewed-on: https://chromium-review.googlesource.com/895226
Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Reviewed-by: Robert Flack <flackr@chromium.org>
Reviewed-by: Yuichiro Hanada <yhanada@chromium.org>
Commit-Queue: Blake O'Hare <blakeo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#534612}
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/ash/wm/lock_layout_manager_unittest.cc
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.cc
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.h
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/extensions/browser/api/virtual_keyboard_private/virtual_keyboard_delegate.h
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/extensions/browser/api/virtual_keyboard_private/virtual_keyboard_private_api.cc
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/extensions/browser/api/virtual_keyboard_private/virtual_keyboard_private_api.h
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/extensions/shell/browser/shell_virtual_keyboard_delegate.cc
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/extensions/shell/browser/shell_virtual_keyboard_delegate.h
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/ui/keyboard/keyboard_controller.cc
[modify] https://crrev.com/cc8dd92b43ecc60c17d388c1f5fd408d5587cb70/ui/keyboard/keyboard_controller.h