Unify safe_browsing* components [1]: move safe_browsing_prefs*

components/safe_browsing/common/safe_browsing_prefs.h

 // Copyright (c) 2016 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.
 //
 // Safe Browsing preferences and some basic utility functions for using them.
 
-#ifndef COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_PREFS_H_
-#define COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_PREFS_H_
+#ifndef COMPONENTS_SAFE_BROWSING_COMMON_SAFE_BROWSING_PREFS_H_
+#define COMPONENTS_SAFE_BROWSING_COMMON_SAFE_BROWSING_PREFS_H_
 
 #include "base/feature_list.h"
 
 class PrefService;
 
 namespace prefs {
 // Boolean that tell us whether Safe Browsing extended reporting is enabled.
 extern const char kSafeBrowsingExtendedReportingEnabled[];
 
 // Boolean indicating whether Safe Browsing Scout reporting is enabled, which
@@ skipping 122 matching lines @@
                                             bool on_show_pref_existed,
                                             bool on_show_pref_value);
 
 // Called to indicate that a security interstitial is about to be shown to the
 // user. This may trigger the user to begin seeing the Scout opt-in text
 // depending on their experiment state.
 void UpdatePrefsBeforeSecurityInterstitial(PrefService* prefs);
 
 }  // namespace safe_browsing
 
-#endif  // COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_PREFS_H_
+#endif  // COMPONENTS_SAFE_BROWSING_COMMON_SAFE_BROWSING_PREFS_H_