Add TrackedPreferenceValidationDelegate

chrome/browser/prefs/tracked/tracked_split_preference.cc

Index: chrome/browser/prefs/tracked/tracked_split_preference.cc
diff --git a/chrome/browser/prefs/tracked/tracked_split_preference.cc b/chrome/browser/prefs/tracked/tracked_split_preference.cc
index e40990d1e92b12943e66c355da278f3d82c662c2..6eabc7526d631f20f3b919284b4e360e72ce78b0 100644
--- a/chrome/browser/prefs/tracked/tracked_split_preference.cc
+++ b/chrome/browser/prefs/tracked/tracked_split_preference.cc
@@ -9,6 +9,7 @@
 #include "base/logging.h"
 #include "base/values.h"
 #include "chrome/browser/prefs/pref_hash_store_transaction.h"
+#include "chrome/browser/prefs/tracked/tracked_preference_validation_observer.h"
 
 TrackedSplitPreference::TrackedSplitPreference(
     const std::string& pref_path,
@@ -32,7 +33,8 @@ void TrackedSplitPreference::OnNewValue(
 
 bool TrackedSplitPreference::EnforceAndReport(
     base::DictionaryValue* pref_store_contents,
-    PrefHashStoreTransaction* transaction) const {
+    PrefHashStoreTransaction* transaction,
+    TrackedPreferenceValidationObserver* observer) const {
   base::DictionaryValue* dict_value = NULL;
   if (!pref_store_contents->GetDictionary(pref_path_, &dict_value) &&
       pref_store_contents->Get(pref_path_, NULL)) {
@@ -52,6 +54,10 @@ bool TrackedSplitPreference::EnforceAndReport(
 
   TrackedPreferenceHelper::ResetAction reset_action =
       helper_.GetAction(value_state);
+  if (observer) {
+    observer->OnSplitPreferenceValidation(
+        pref_path_, dict_value, invalid_keys, value_state, reset_action);
+  }
   helper_.ReportAction(reset_action);
 
   bool was_reset = false;