Move pref backing up flags from local state to device settings on ChromeOS.

chrome/app/policy/policy_templates.json

Index: chrome/app/policy/policy_templates.json
diff --git a/chrome/app/policy/policy_templates.json b/chrome/app/policy/policy_templates.json
index 1e868f07413650f4a5a8f502c1dbd55fac09a526..371a5cf7480ba7bcaec771139d808a7aa4c8c363 100644
--- a/chrome/app/policy/policy_templates.json
+++ b/chrome/app/policy/policy_templates.json
@@ -112,7 +112,7 @@
 #   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: 190
+#   For your editing convenience: highest ID currently used: 191
 #
 # Placeholders:
 #   The following placeholder strings are automatically substituted:
@@ -4334,6 +4334,23 @@
 
       When this policy is set to false or is not configured, the icons are visible.''',
     },
+    {
+      'name': 'DeviceStartUpFlags',
+      'type': 'list',
+      'schema': {
+        'type': 'array',
+        'items': { 'type': 'string' },
+      },
+      'supported_on': ['chrome_os:27-'],
+      'device_only': True,
+      'features': {
+        'dynamic_refresh': False,
+      },
+      'example_value': [ "enable-managed-mode", "my-cool-flag" ],
+      'id': 191,
+      'caption': '''System wide flags to be applied on Chrome start-up''',
+      'desc': '''Specifies the flags that should be applied to Chrome when it starts. The specified flags are applied before Chrome is started even for the sign-in screen.''',
+    },
   ],
   'messages': {
     # Messages that are not associated to any policies.