Add login screen locale and input method device policies

chrome/browser/chromeos/policy/proto/chrome_device_policy.proto

Index: chrome/browser/chromeos/policy/proto/chrome_device_policy.proto
diff --git a/chrome/browser/chromeos/policy/proto/chrome_device_policy.proto b/chrome/browser/chromeos/policy/proto/chrome_device_policy.proto
index 50ce9a6910256a86dfe40470704a5505886fd78e..6c5a9b73d5fe784f282ac7a4cc98050b8065b8e0 100644
--- a/chrome/browser/chromeos/policy/proto/chrome_device_policy.proto
+++ b/chrome/browser/chromeos/policy/proto/chrome_device_policy.proto
@@ -754,6 +754,16 @@ message LoginAppsProto {
   repeated string login_apps = 1;
 }
 
+// A list of allowed locales on the login page.

[Thiemo Nagel, 2017/02/13 11:33:20]

Nit: login screen

[pmarko, 2017/02/13 17:50:31]

You're right. Mini-CL to correct this:
https://codereview.chromium.org/2694833002 .

+message LoginScreenLocalesProto {
+  repeated string login_screen_locales = 1;
+}
+
+// A list of allowed input methods on the login page.

[Thiemo Nagel, 2017/02/13 11:33:20]

Nit: login screen

[pmarko, 2017/02/13 17:50:31]

See above.

+message LoginScreenInputMethodsProto {
+  repeated string login_screen_input_methods = 1;
+}
+
 // The url and hash that specified in JSON format that can be used to set the
 // device-level wallpaper on the login screen before any user logs in.
 message DeviceWallpaperImageProto {
@@ -815,4 +825,6 @@ message ChromeDeviceSettingsProto {
   optional LoginAppsProto login_apps = 46;
   optional NetworkThrottlingEnabledProto network_throttling = 47;
   optional DeviceWallpaperImageProto device_wallpaper_image = 48;
+  optional LoginScreenLocalesProto login_screen_locales = 49;
+  optional LoginScreenInputMethodsProto login_screen_input_methods = 50;
 }