Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/68a92eec1bd3
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #27692 from KevinGrandon/bug_1126012_demo_keyboard_tests

Bug 1126012 - Disable failing demo-keyboard unit tests

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https://hg.mozilla.org/integration/gaia-central/rev/72a27a25fcf3
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1126012 - Disable failing demo-keyboard unit tests

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https://hg.mozilla.org/integration/gaia-central/rev/2dda00e28cca
Author: Min-Zhong "John" Lu <jlu@mozilla.com>
Desc: Merge pull request #27361 from mnjul/bug_1115644_kb_settings_rootpanel

Bug 1115644 - Implement RootPanel and standardize panel interface for KeyboardSettingsApp. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/2e220aa45bb1
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1115644 - Implement GeneralPanel and standardize panel interface for KeyboardSettingsApp

- Implement a ViewBase which is the base class of all views and panels. It defines an API for view transitioning and child views.
- PanelController is always included during building.
- KBSettingsApp no longer touches views directly; knowledge of panels/dialogs is moved to PanelController/DialogController from KBSettingsApp.
- GeneralPanel is the "root" panel, renamed as such; in PanelController, the "root" panel may be dynamically designated, with default being GeneralPanel.
- Change init/uninit verbs to start/stop in panels/dialogs. Also, start() must now be explicitly called for symmetry.
- Rename view js filenames to _view.js .

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "5dd0226e5d10433cd8f460a1019b1bfe3d886a3c", 
+        "git_revision": "6ed0df518a9abf240ba9cb65a34f511626beb053", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "af39016058897baea599a36ceadd9d727c4940eb", 
+    "revision": "68a92eec1bd39b418ae555b95df09506c837dee0", 
     "repo_path": "integration/gaia-central"
 }