Add device policy: Kiosk Virtual Keyboard Layout.

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index c9a140590216c9ff1537460c6ebcc9397b9743d7..c5673509ca45d3e7603b70de69768c5a74d5edfa 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -118,7 +118,7 @@
 #   persistent IDs for all fields (but not for groups!) are needed. These are
 #   specified by the 'id' keys of each policy. NEVER CHANGE EXISTING IDs,
 #   because doing so would break the deployed wire format!
-#   For your editing convenience: highest ID currently used: 267
+#   For your editing convenience: highest ID currently used: 268
 #
 # Placeholders:
 #   The following placeholder strings are automatically substituted:
@@ -4660,6 +4660,32 @@
       If this policy is not set, the device will default to a 24 hour clock format.''',
     },
     {
+      'name': 'KioskVirtualKeyboardLayout',

[bartfab (slow), 2014/06/10 12:24:29]

We try not to make special-case policies where a more generic use case exists. A
virtual keyboard can be useful in all sessions, so the policy should apply to
all session types.

Also, I do not think it is a good idea to set the layout of the virtual keyboard
by policy. Instead, we should have a policy that sets the keyboard layout (both
physical and virtual, a generalization of crbug.com/214904) plus a second policy
that toggles the virtual keyboard.

+      'type': 'string-enum',
+      'schema': {
+        'type': 'string',
+        'enum': [
+          'en:us'
+        ],
+      },
+      'items': [
+        {
+          'name': 'English(US)',
+          'value': 'en-us',

[bartfab (slow), 2014/06/10 12:24:30]

What is the plan for keeping this list up to date with the full set of keyboard
supported on Chrome OS?

+          'caption': '''US English Layout''',
+        },
+      ],
+      'supported_on': ['chrome_os:37-' ],
+      'features': {
+        'dynamic_refresh': False,
+        'per_profile': True

[bartfab (slow), 2014/06/10 12:24:30]

You need to make this a user policy. As long as it is a device policy, it will
apply to the whole device and cannot be per-profile.

+      },
+      'example_value': 'en-us',
+      'id': 268,
+      'caption': '''Kiosk Virtual Keyboard Layout''',
+      'desc': '''If |KioskVirtualKeyboardLayout| is unset this policy has no effect. Otherwise this enables the virtual keyboard and fixes its layout to the layout specified.''',
+    },
+    {
       'name': 'ShowLogoutButtonInTray',
       'type': 'main',
       'schema': { 'type': 'boolean' },