Add virtual keyboard item into opt-in IME menu.

Add virtual keyboard item into opt-in IME menu.

The 'Smart deploy toggle' is always hidden in opt-in IME menu. We should show/hide it based on the vr and devices state.
Make ImeMenuTray listens on the virtual keyboard state to show the toggle.
Currently the ImeMenuBubble doesn't support update UI. So if there's state change (which leads to UI change) of the VK, just hide the bubble.

BUG=668013
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2474843002
Cr-Commit-Position: refs/heads/master@{#434127}
(cherry picked from commit 1fb9e7720d5a4ddaef6ce257f4d252a831bea688)

Committed: https://chromium.googlesource.com/chromium/src/+/1511d6037dd138d551a42c36e21264cd4428aa9d

[tdanderson, 2016-11-28 22:15:50]

Description was changed from

==========
Add virtual keyboard item into opt-in IME menu.

The 'Smart deploy toggle' is always hidden in opt-in IME menu. We should
show/hide it based on the vr and devices state.
Make ImeMenuTray listens on the virtual keyboard state to show the toggle.
Currently the ImeMenuBubble doesn't support update UI. So if there's state
change (which leads to UI change) of the VK, just hide the bubble.

BUG=668013
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2474843002
Cr-Commit-Position: refs/heads/master@{#434127}
(cherry picked from commit 1fb9e7720d5a4ddaef6ce257f4d252a831bea688)
==========

to

==========
Add virtual keyboard item into opt-in IME menu.

The 'Smart deploy toggle' is always hidden in opt-in IME menu. We should
show/hide it based on the vr and devices state.
Make ImeMenuTray listens on the virtual keyboard state to show the toggle.
Currently the ImeMenuBubble doesn't support update UI. So if there's state
change (which leads to UI change) of the VK, just hide the bubble.

BUG=668013
TEST=Verified on local build.

Review-Url: https://codereview.chromium.org/2474843002
Cr-Commit-Position: refs/heads/master@{#434127}
(cherry picked from commit 1fb9e7720d5a4ddaef6ce257f4d252a831bea688)

Committed:
https://chromium.googlesource.com/chromium/src/+/1511d6037dd138d551a42c36e212...
==========

[tdanderson, 2016-11-28 22:15:52]

Committed patchset #1 (id:1) manually as
1511d6037dd138d551a42c36e21264cd4428aa9d.