Update the super MAC after performing MAC validation.

chrome/browser/prefs/pref_hash_filter_unittest.cc

Index: chrome/browser/prefs/pref_hash_filter_unittest.cc
diff --git a/chrome/browser/prefs/pref_hash_filter_unittest.cc b/chrome/browser/prefs/pref_hash_filter_unittest.cc
index e200d2f5bd3f6238b66e2195b486760a31564bd6..1c16b3847d7f5ef6a0f82f43f729e788b86969d7 100644
--- a/chrome/browser/prefs/pref_hash_filter_unittest.cc
+++ b/chrome/browser/prefs/pref_hash_filter_unittest.cc
@@ -169,6 +169,7 @@ class MockPrefHashStore : public PrefHashStore {
     virtual void StoreSplitHash(
         const std::string& path,
         const base::DictionaryValue* split_value) OVERRIDE;
+    virtual bool StampSuperMac() OVERRIDE;
 
    private:
     MockPrefHashStore* outer_;
@@ -304,6 +305,11 @@ void MockPrefHashStore::MockPrefHashStoreTransaction::StoreSplitHash(
                           PrefHashFilter::TRACKING_STRATEGY_SPLIT);
 }
 
+bool MockPrefHashStore::MockPrefHashStoreTransaction::StampSuperMac() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
 std::vector<PrefHashFilter::TrackedPreferenceMetadata> GetConfiguration(
     PrefHashFilter::EnforcementLevel max_enforcement_level) {
   std::vector<PrefHashFilter::TrackedPreferenceMetadata> configuration(