Remove base::StringValue

components/sync/base/model_type.h

Index: components/sync/base/model_type.h
diff --git a/components/sync/base/model_type.h b/components/sync/base/model_type.h
index c2840f1e9591be3b10695ade378908845f918bb9..34419ee9cd0c8f0dadf891c8d8a842d9132bccfa 100644
--- a/components/sync/base/model_type.h
+++ b/components/sync/base/model_type.h
@@ -17,7 +17,6 @@
 namespace base {
 class ListValue;
 class Value;
-using StringValue = Value;
 }
 
 namespace sync_pb {
@@ -286,7 +285,7 @@ int ModelTypeToHistogramInt(ModelType model_type);
 // Handles all model types, and not just real ones.
 //
 // Caller takes ownership of returned value.
-base::StringValue* ModelTypeToValue(ModelType model_type);
+base::Value* ModelTypeToValue(ModelType model_type);
 
 // Converts a Value into a ModelType - complement to ModelTypeToValue().
 ModelType ModelTypeFromValue(const base::Value& value);