Keeps the opt-in IME menu in lock screen.

The opt-in IME menu was implemented with panel in shelf, which could not show in lock screen. Thus, the menu changed back the system menu. Since now the opt-in IME menu is created with native views on tray, we don't need to change back to system menu in lock screen.

When switching users, the opt-in IME menu could not get preferences change event to update the menu activation state. This cl also fix this issue by saving the state by profile in InputMethodManager and sending the event of switching active user.

TBR=shuchen@chromium.org
NOPRESUBMIT=true
NOTRY=true
BUG=640266
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2274013003
Cr-Commit-Position: refs/heads/master@{#414988}
(cherry picked from commit 47a06020c728d53c5f3c900234f7b6def397816a)

[Azure Wei, 2016-08-30 08:58:06]

Description was changed from

==========
The opt-in IME menu was implemented with panel in shelf, which could not show in
lock screen. Thus, the menu changed back the system menu. Since now the opt-in
IME menu is created with native views on tray, we don't need to change back to
system menu in lock screen.

When switching users, the opt-in IME menu could not get preferences change event
to update the menu activation state. This cl also fix this issue by saving the
state by profile in InputMethodManager and sending the event of switching active
user.

BUG=640266
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2274013003
Cr-Commit-Position: refs/heads/master@{#414988}
(cherry picked from commit 47a06020c728d53c5f3c900234f7b6def397816a)
==========

to

==========
The opt-in IME menu was implemented with panel in shelf, which could not show in
lock screen. Thus, the menu changed back the system menu. Since now the opt-in
IME menu is created with native views on tray, we don't need to change back to
system menu in lock screen.

When switching users, the opt-in IME menu could not get preferences change event
to update the menu activation state. This cl also fix this issue by saving the
state by profile in InputMethodManager and sending the event of switching active
user.

TBR=shuchen@chromium.org
NOPRESUBMIT=true
NOTRY=true
BUG=640266
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2274013003
Cr-Commit-Position: refs/heads/master@{#414988}
(cherry picked from commit 47a06020c728d53c5f3c900234f7b6def397816a)
==========

[Azure Wei, 2016-08-30 08:58:10]

The CQ bit was checked by azurewei@chromium.org

[commit-bot: I haz the power, 2016-08-30 08:58:35]

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, 2016-08-30 08:59:51]

Description was changed from

==========
The opt-in IME menu was implemented with panel in shelf, which could not show in
lock screen. Thus, the menu changed back the system menu. Since now the opt-in
IME menu is created with native views on tray, we don't need to change back to
system menu in lock screen.

When switching users, the opt-in IME menu could not get preferences change event
to update the menu activation state. This cl also fix this issue by saving the
state by profile in InputMethodManager and sending the event of switching active
user.

TBR=shuchen@chromium.org
NOPRESUBMIT=true
NOTRY=true
BUG=640266
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2274013003
Cr-Commit-Position: refs/heads/master@{#414988}
(cherry picked from commit 47a06020c728d53c5f3c900234f7b6def397816a)
==========

to

==========
The opt-in IME menu was implemented with panel in shelf, which could not show in
lock screen. Thus, the menu changed back the system menu. Since now the opt-in
IME menu is created with native views on tray, we don't need to change back to
system menu in lock screen.

When switching users, the opt-in IME menu could not get preferences change event
to update the menu activation state. This cl also fix this issue by saving the
state by profile in InputMethodManager and sending the event of switching active
user.

TBR=shuchen@chromium.org
NOPRESUBMIT=true
NOTRY=true
BUG=640266
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2274013003
Cr-Commit-Position: refs/heads/master@{#414988}
(cherry picked from commit 47a06020c728d53c5f3c900234f7b6def397816a)
==========

[commit-bot: I haz the power, 2016-08-30 08:59:51]

Committed patchset #1 (id:1)