Expand FeatureList to support FieldTrial association.

components/variations/variations_seed_processor.h

Index: components/variations/variations_seed_processor.h
diff --git a/components/variations/variations_seed_processor.h b/components/variations/variations_seed_processor.h
index edbe059524243dd2fe2584be9989c6363cb8fd5e..f7199bef883d3078e78164b1a9c932892193a5b3 100644
--- a/components/variations/variations_seed_processor.h
+++ b/components/variations/variations_seed_processor.h
@@ -18,6 +18,10 @@
 #include "components/variations/proto/study.pb.h"
 #include "components/variations/proto/variations_seed.pb.h"
 
+namespace base {
+class FeatureList;
+}
+
 namespace variations {
 
 class ProcessedStudy;
@@ -42,7 +46,8 @@ class VariationsSeedProcessor {
                             const std::string& hardware_class,
                             const std::string& session_consistency_country,
                             const std::string& permanent_consistency_country,
-                            const UIStringOverrideCallback& override_callback);
+                            const UIStringOverrideCallback& override_callback,
+                            base::FeatureList* feature_list);
 
  private:
   friend class VariationsSeedProcessorTest;
@@ -71,7 +76,8 @@ class VariationsSeedProcessor {
   // Creates and registers a field trial from the |processed_study| data.
   // Disables the trial if |processed_study.is_expired| is true.
   void CreateTrialFromStudy(const ProcessedStudy& processed_study,
-                            const UIStringOverrideCallback& override_callback);
+                            const UIStringOverrideCallback& override_callback,
+                            base::FeatureList* feature_list);
 
   DISALLOW_COPY_AND_ASSIGN(VariationsSeedProcessor);
 };