Convert TrackedPreferenceValidationDelegate into a mojo interface.

components/user_prefs/tracked/tracked_preference_validation_delegate.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_VALIDATION_DELEGATE_H_
-#define COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_VALIDATION_DELEGATE_H_
-
-#include <string>
-#include <vector>
-
-#include "components/user_prefs/tracked/pref_hash_store_transaction.h"
-
-namespace base {
-class DictionaryValue;
-class Value;
-}
-
-// A TrackedPreferenceValidationDelegate is notified of the results of each
-// tracked preference validation event.
-class TrackedPreferenceValidationDelegate {
- public:
-  virtual ~TrackedPreferenceValidationDelegate() {}
-
-  // Notifies observes of the result (|value_state|) of checking the atomic
-  // |value| (which may be NULL) at |pref_path|. |is_personal| indicates whether
-  // or not the value may contain personal information.
-  virtual void OnAtomicPreferenceValidation(
-      const std::string& pref_path,
-      const base::Value* value,
-      PrefHashStoreTransaction::ValueState value_state,
-      PrefHashStoreTransaction::ValueState external_validation_value_state,
-      bool is_personal) = 0;
-
-  // Notifies observes of the result (|value_state|) of checking the split
-  // |dict_value| (which may be NULL) at |pref_path|. |is_personal| indicates
-  // whether or not the value may contain personal information.
-  virtual void OnSplitPreferenceValidation(
-      const std::string& pref_path,
-      const base::DictionaryValue* dict_value,
-      const std::vector<std::string>& invalid_keys,
-      const std::vector<std::string>& external_validation_invalid_keys,
-      PrefHashStoreTransaction::ValueState value_state,
-      PrefHashStoreTransaction::ValueState external_validation_value_state,
-      bool is_personal) = 0;
-};
-
-#endif  // COMPONENTS_USER_PREFS_TRACKED_TRACKED_PREFERENCE_VALIDATION_DELEGATE_H_