Add login screen locale and input method device policies

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 28d3c99f8ed01a249943ef9d8365f8cfc9b8bdba..f9fb7e7d81e2ea08ed1a2548fa7ccb3d272370aa 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -139,7 +139,7 @@
 #   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: 360
+#   For your editing convenience: highest ID currently used: 362
 #   And don't forget to also update the EnterprisePolicies enum of
 #   histograms.xml.
 #
@@ -9448,6 +9448,52 @@
 
       If the device wallpaper policy is left not set, it's the user's wallpaper policy to decide what to show if the user's wallpaper policy is set.''',
     },
+    {
+      'name': 'DeviceLoginScreenLocales',
+      'type': 'list',
+      'schema': {
+        'type': 'array',
+        'items': { 'type': 'string' },
+      },
+      'supported_on': ['chrome_os:58-'],
+      'device_only': True,
+      'features': {
+        'dynamic_refresh': False,
+      },
+      'example_value': [ "en-US" ],
+      'max_size': 16777216,
+      'id': 361,
+      'caption': '''Device sign-in screen locale''',
+      'tags': [],
+      'desc': '''Configures the locale which is enforced on the Chrome OS sign-in screen.

[pastarmovj, 2017/01/26 20:13:16]

I know this is very inconsistent right now but still I will appreciate if you
use the proper placeholders for the brand name <ph
name="PRODUCT_OS_NAME">$2<ex>Google Chrome OS</ex></ph> so that it get's
properly substituted by Chromium OS for the open source builds.

[pmarko, 2017/01/27 08:52:18]

Done.
I've actually left the placeholder only in the first paragraph and refer to
"sign-in screen" later to prevent redundancy.

+
+      If this policy is set, the Chrome OS sign-in screen will always be displayed in the locale which is given by the first value of this policy (the policy is defined as a list for forward compatibility).

[pastarmovj, 2017/01/26 20:13:16]

Leave an empty line between paragraphs.

[pmarko, 2017/01/27 08:52:18]

Done. (merged last 3 paragraphs into one)

+      If this policy is not set or is set to an empty list, the Chrome OS sign-in screen will be displayed in the locale of the last user session.
+      If this policy is set to a value which is not a valid locale, the Chrome OS sign-in screen will be displayed in a fallback locale (currently, en-US).'''
+    },
+    {
+      'name': 'DeviceLoginScreenInputMethods',
+      'type': 'list',
+      'schema': {
+        'type': 'array',
+        'items': { 'type': 'string' },
+      },
+      'supported_on': ['chrome_os:58-'],
+      'device_only': True,
+      'features': {
+        'dynamic_refresh': True,
+      },
+      'example_value': [ "xkb:us::en", "xkb:ch::ger" ],
+      'max_size': 16777216,
+      'id': 362,
+      'caption': '''Device sign-in screen keyboard layouts''',
+      'tags': [],
+      'desc': '''Configures which keyboard layouts are allowed on the Chrome OS sign-in screen.
+
+      If this policy is set to a list of input method identifiers, the given input methods will be available on the Chrome OS sign-in screen. The first given input method will be preselected. While a user pod is focused on the Chrome OS sign-in screen, the user's least recently used input method will be available in addition to the input methods given by this policy.
+      If this policy is not set, the input methods on the Chrome OS sign-in screen will be derived from the locale in which the sign-in screen is displayed.
+      Values which are not valid input method identifiers will be ignored.''',
+    },
   ],
   'messages': {
     # Messages that are not associated to any policies.