Manual Revert of Reland: chromeos: Fix shelf appearing at login screen under mash (patchset #7 id:1…

Manual Revert of Reland: chromeos: Fix shelf appearing at login screen under mash (patchset #7 id:140001 of https://codereview.chromium.org/2625733003/ )

Reason for revert:
compile broken and reverting https://codereview.chromium.org/2628973002 didn't seem to fix it.

Original issue's description:
> Reland: chromeos: Fix shelf appearing at login screen under mash
>
> The reland adds a fix for a crash in window animation code when restoring
> a session that has a minimized window. The animation tries to compute a
> shelf item position before the shelf is initialized. The animation is not
> visible to the user. Returning an empty rect results in a default target
> position, which is fine in this case.
>
> Added guards for access to ShelfView before shelf is initialized.
>
> Original CL description:
>
> Previously chrome --mash would always create the shelf on startup, even at
> the login screen. Now it waits until login is complete, like classic ash.
>
> Ash watches for SessionState::ACTIVE via a SessionStateObserver to create the
> shelf, rather than NOTIFICATION_LOGIN_USER_PROFILE_PREPARED. For most login
> flows this doesn't matter, but for supervised user creation it means that the
> shelf is not created until the flow is completed. This is an improvement
> because in the old code the shelf would be created too early and had to be
> explicitly hidden.
>
> Always create a SessionControllerClient in chrome, even in classic ash. This
> allows classic ash to use the mojo pathway via ash::SessionController.
>
> Remove WmShell::ShowShelf(), which was introduced in crrev.com/10693003 to
> delay showing the shelf until post-login OOBE (like avatar picture select)
> was complete. It does not seem to be needed anymore, either in production or
> in tests.
>
> Change AshTestImplMus to simulate a user logging in which is required to
> create the shelf on the primary display and also to have a non-zero user
> count to create the shelf on additional displays.
>
> Remove some unnecessary OS_CHROMEOS ifdefs in //c/b/ui/ash.
>
> BUG=666021, 679513
> TEST=ash_unittests and chrome browser_tests
>
> Committed: https://crrev.com/7f99e933e595824281102ff6737075dccbbc4d5c
> Cr-Commit-Position: refs/heads/master@{#439845}
>
> Reverted:
>
> Review-Url: https://codereview.chromium.org/2619943002
> Cr-Original-Commit-Position: refs/heads/master@{#442484}
> Review-Url: https://codereview.chromium.org/2625733003
> Cr-Commit-Position: refs/heads/master@{#443106}
> Committed: https://chromium.googlesource.com/chromium/src/+/75298de72cf7c25e137c3c5e63e4d01aa0569c1c

TBR=msw@chromium.org,xiyuan@chromium.org,sky@chromium.org,jamescook@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=666021, 679513
Review-Url: https://codereview.chromium.org/2627243003
Cr-Commit-Position: refs/heads/master@{#443138}
Committed: https://chromium.googlesource.com/chromium/src/+/99bed8e7ec46b0943261ffb46894503605aeba3f

[Timothy Loh, 2017-01-12 03:39:14]

The CQ bit was checked by timloh@chromium.org

[commit-bot: I haz the power, 2017-01-12 03:39:29]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-12 03:40:25]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484192354724650, "parent_rev":
"a0a14a480f4d26064ec659eab3f2d8b9e4ac0c33", "commit_rev":
"99bed8e7ec46b0943261ffb46894503605aeba3f"}

[commit-bot: I haz the power, 2017-01-12 03:40:58]

Description was changed from

==========
Manual Revert of Reland: chromeos: Fix shelf appearing at login screen under
mash (patchset #7 id:140001 of https://codereview.chromium.org/2625733003/ )

Reason for revert:
compile broken and reverting https://codereview.chromium.org/2628973002 didn't
seem to fix it.

Original issue's description:
> Reland: chromeos: Fix shelf appearing at login screen under mash
>
> The reland adds a fix for a crash in window animation code when restoring
> a session that has a minimized window. The animation tries to compute a
> shelf item position before the shelf is initialized. The animation is not
> visible to the user. Returning an empty rect results in a default target
> position, which is fine in this case.
>
> Added guards for access to ShelfView before shelf is initialized.
>
> Original CL description:
>
> Previously chrome --mash would always create the shelf on startup, even at
> the login screen. Now it waits until login is complete, like classic ash.
>
> Ash watches for SessionState::ACTIVE via a SessionStateObserver to create the
> shelf, rather than NOTIFICATION_LOGIN_USER_PROFILE_PREPARED. For most login
> flows this doesn't matter, but for supervised user creation it means that the
> shelf is not created until the flow is completed. This is an improvement
> because in the old code the shelf would be created too early and had to be
> explicitly hidden.
>
> Always create a SessionControllerClient in chrome, even in classic ash. This
> allows classic ash to use the mojo pathway via ash::SessionController.
>
> Remove WmShell::ShowShelf(), which was introduced in crrev.com/10693003 to
> delay showing the shelf until post-login OOBE (like avatar picture select)
> was complete. It does not seem to be needed anymore, either in production or
> in tests.
>
> Change AshTestImplMus to simulate a user logging in which is required to
> create the shelf on the primary display and also to have a non-zero user
> count to create the shelf on additional displays.
>
> Remove some unnecessary OS_CHROMEOS ifdefs in //c/b/ui/ash.
>
> BUG=666021, 679513
> TEST=ash_unittests and chrome browser_tests
>
> Committed: https://crrev.com/7f99e933e595824281102ff6737075dccbbc4d5c
> Cr-Commit-Position: refs/heads/master@{#439845}
>
> Reverted:
>
> Review-Url: https://codereview.chromium.org/2619943002
> Cr-Original-Commit-Position: refs/heads/master@{#442484}
> Review-Url: https://codereview.chromium.org/2625733003
> Cr-Commit-Position: refs/heads/master@{#443106}
> Committed:
https://chromium.googlesource.com/chromium/src/+/75298de72cf7c25e137c3c5e63e4...

TBR=msw@chromium.org,xiyuan@chromium.org,sky@chromium.org,jamescook@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=666021, 679513
==========

to

==========
Manual Revert of Reland: chromeos: Fix shelf appearing at login screen under
mash (patchset #7 id:140001 of https://codereview.chromium.org/2625733003/ )

Reason for revert:
compile broken and reverting https://codereview.chromium.org/2628973002 didn't
seem to fix it.

Original issue's description:
> Reland: chromeos: Fix shelf appearing at login screen under mash
>
> The reland adds a fix for a crash in window animation code when restoring
> a session that has a minimized window. The animation tries to compute a
> shelf item position before the shelf is initialized. The animation is not
> visible to the user. Returning an empty rect results in a default target
> position, which is fine in this case.
>
> Added guards for access to ShelfView before shelf is initialized.
>
> Original CL description:
>
> Previously chrome --mash would always create the shelf on startup, even at
> the login screen. Now it waits until login is complete, like classic ash.
>
> Ash watches for SessionState::ACTIVE via a SessionStateObserver to create the
> shelf, rather than NOTIFICATION_LOGIN_USER_PROFILE_PREPARED. For most login
> flows this doesn't matter, but for supervised user creation it means that the
> shelf is not created until the flow is completed. This is an improvement
> because in the old code the shelf would be created too early and had to be
> explicitly hidden.
>
> Always create a SessionControllerClient in chrome, even in classic ash. This
> allows classic ash to use the mojo pathway via ash::SessionController.
>
> Remove WmShell::ShowShelf(), which was introduced in crrev.com/10693003 to
> delay showing the shelf until post-login OOBE (like avatar picture select)
> was complete. It does not seem to be needed anymore, either in production or
> in tests.
>
> Change AshTestImplMus to simulate a user logging in which is required to
> create the shelf on the primary display and also to have a non-zero user
> count to create the shelf on additional displays.
>
> Remove some unnecessary OS_CHROMEOS ifdefs in //c/b/ui/ash.
>
> BUG=666021, 679513
> TEST=ash_unittests and chrome browser_tests
>
> Committed: https://crrev.com/7f99e933e595824281102ff6737075dccbbc4d5c
> Cr-Commit-Position: refs/heads/master@{#439845}
>
> Reverted:
>
> Review-Url: https://codereview.chromium.org/2619943002
> Cr-Original-Commit-Position: refs/heads/master@{#442484}
> Review-Url: https://codereview.chromium.org/2625733003
> Cr-Commit-Position: refs/heads/master@{#443106}
> Committed:
https://chromium.googlesource.com/chromium/src/+/75298de72cf7c25e137c3c5e63e4...

TBR=msw@chromium.org,xiyuan@chromium.org,sky@chromium.org,jamescook@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=666021, 679513

Review-Url: https://codereview.chromium.org/2627243003
Cr-Commit-Position: refs/heads/master@{#443138}
Committed:
https://chromium.googlesource.com/chromium/src/+/99bed8e7ec46b0943261ffb46894...
==========

[commit-bot: I haz the power, 2017-01-12 03:40:59]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/99bed8e7ec46b0943261ffb46894...