Implemented clearing Java prefs after pulling variations first run seed from Java to C++ side

components/variations/android/variations_seed_bridge.h

Index: components/variations/android/variations_seed_bridge.h
diff --git a/components/variations/android/variations_seed_bridge.h b/components/variations/android/variations_seed_bridge.h
index 83381fa4837e4c9678f041aaee40d7619348629e..784701a7493d10781ba201614d0972d8df59c7dd 100644
--- a/components/variations/android/variations_seed_bridge.h
+++ b/components/variations/android/variations_seed_bridge.h
@@ -18,6 +18,14 @@ void GetVariationsFirstRunSeed(std::string* seed_data,
                                std::string* seed_signature,
                                std::string* seed_country);
 
+// Clears first run seed preferences stored on the Java side of Chrome for
+// Android.
+void ClearJavaFirstRunPrefs();
+
+// Marks variations seed as stored to avoid repeated fetches of the seed at
+// the Java side.
+void MarkVariationsSeedAsStored();
+
 }  // namespace android
 }  // namespace variations