Further refactoring of SBER1 preference usage.

components/safe_browsing_db/safe_browsing_prefs.h

Index: components/safe_browsing_db/safe_browsing_prefs.h
diff --git a/components/safe_browsing_db/safe_browsing_prefs.h b/components/safe_browsing_db/safe_browsing_prefs.h
index 1232401d75718a67a541561733287bbc0c1fab9f..d787076e5d71b24eaf3654bf3e3debeb0639788d 100644
--- a/components/safe_browsing_db/safe_browsing_prefs.h
+++ b/components/safe_browsing_db/safe_browsing_prefs.h
@@ -15,6 +15,10 @@ extern const char kSafeBrowsingExtendedReportingEnabled[];
 
 namespace safe_browsing {
 
+// Returns whether the currently active Safe Browsing Extended Reporting
+// preference exists (eg: has been set before).
+bool ExtendedReportingPrefExists(const PrefService& prefs);
+
 // Returns the name of the Safe Browsing Extended Reporting pref that is
 // currently in effect. The specific pref in-use may change through experiments.
 const char* GetExtendedReportingPrefName();
@@ -27,6 +31,10 @@ bool IsExtendedReportingEnabled(const PrefService& prefs);
 // Updates UMA metrics about Safe Browsing Extended Reporting states.
 void RecordExtendedReportingMetrics(const PrefService& prefs);
 
+// Sets the currently active Safe Browsing Extended Reporting preference to the
+// specified value.
+void SetExtendedReportingPref(PrefService* prefs, bool value);
+
 }  // namespace safe_browsing
 
 #endif  // COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_PREFS_H_