Clean-up the code for default variations in chrome://flags.

components/flags_ui/feature_entry.h

Index: components/flags_ui/feature_entry.h
diff --git a/components/flags_ui/feature_entry.h b/components/flags_ui/feature_entry.h
index a3930fd2e13e477bf55cf433951c3d546caf01f0..5c44bc3334f3e16e236faae040cc7042e42aa565 100644
--- a/components/flags_ui/feature_entry.h
+++ b/components/flags_ui/feature_entry.h
@@ -50,10 +50,12 @@ struct FeatureEntry {
 
     // Corresponds to a base::Feature and additional options [O_1, ..., O_n]
     // that specify variation parameters. Each of the options can specify a set
-    // of variation parameters. The entry will have n+2 states: Default,
-    // Enabled: V_1, ..., Enabled: V_n, Disabled. When not specified or set to
-    // Default, the normal default values of the feature and of the parameters
-    // are used.
+    // of variation parameters. The entry will have n+3 states: Default,
+    // Enabled, Enabled V_1, ..., Enabled: V_n, Disabled. When set to Default,
+    // the normal default values of the feature and of the parameters are used
+    // (possibly passed from the server in a trial config). When set to Enabled,
+    // the feature is overriden to be enabled and empty set of parameters is
+    // used boiling down to the default behavior in the code.
     FEATURE_WITH_VARIATIONS_VALUE,
   };