Bumping gaia.json for 7 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/1b83791abc2b
Author: Rudy Lu <left.lu@gmail.com>
Desc: Merge pull request #11873 from RudyLu/3rdParty_keyboard_support_commit3

Add 3rd-party keyboard (IME) support.

========

https://hg.mozilla.org/integration/gaia-central/rev/106a99cf830c
Author: Rudy Lu <left.lu@gmail.com>
Desc: Bug 911112 - revert keyboard-frame rename due to Gaia UI Test Failure on
TPBL. r=timdream

========

https://hg.mozilla.org/integration/gaia-central/rev/b8a203e6cd90
Author: Rudy Lu <left.lu@gmail.com>
Desc: Bug 906096 - Add some Gaia workaround to ensure the new IME framework continues to work in Firefox Nightly
r=timdream

========

https://hg.mozilla.org/integration/gaia-central/rev/ab72bf030d80
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 856910, Bug 893557 -
1. Add Observable, ObservableArray, and ListView to Utils.
2. Add unit testing.
3. Implement the keyboard panel based on the UX spec.
r=evelyn

========

https://hg.mozilla.org/integration/gaia-central/rev/ea26c1be3700
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 856910 - Add MVVM pattern in settings app. r=evelyn

========

https://hg.mozilla.org/integration/gaia-central/rev/5d15b4faf50e
Author: Rudy Lu <left.lu@gmail.com>
Desc: Bug 858383 - [Keyboard] Integrate the new keyboard manager with switch
and show layout list functions in Keyboard app.
 1. Modify keyboard manifest to expose entry points as input methods.
 2. Modify keyboard init logic to interact with new keyboard manager.
 3. Make use of inputContext in keyboard app.
 4. Bug 885692 - To integrate with the new keyboard switching API. for keyboard app
 5. Bug 899073 - inputContext.geText() whould return Promise
r=timdream

========

https://hg.mozilla.org/integration/gaia-central/rev/b7c283ffa627
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 816912 - Keyboard Manager to support 3rd-party keyboard
    1. manage running keyboard layouts in System app
    2. generat new mozSettings array for keyboard app, setLayoutEnable
and saveToSettings fn in keyboard helper.
    3. keyboard helper will send 'keyboardsrefresh' event when
'mozSettings' change.
    4. Bug 885692 - To integrate with the new keyboard switching API. for km
    5. Bug 902830 - Use new chrome event for keyboard manager.
r=timdream

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "2e7306782f0e0b29dff604bc293cd4e1bec953b3", 
+    "revision": "1b83791abc2b7e193046bfb2f5bd16c0ed7ff664", 
     "repo_path": "/integration/gaia-central"
 }