Support API aliases

extensions/common/features/feature.cc

Index: extensions/common/features/feature.cc
diff --git a/extensions/common/features/feature.cc b/extensions/common/features/feature.cc
index b4c18cb1d7addafe27d7eed91cf7d6728a85f544..18a41757cbd9a6a4676607b608d68049763d762b 100644
--- a/extensions/common/features/feature.cc
+++ b/extensions/common/features/feature.cc
@@ -54,4 +54,12 @@ void Feature::set_name(base::StringPiece name) {
   name_ = name.as_string();
 }
 
+void Feature::set_alias(base::StringPiece alias) {
+  alias_ = alias.as_string();
+}
+
+void Feature::set_source(base::StringPiece source) {
+  source_ = source.as_string();
+}
+
 }  // namespace extensions