Provide access to recommended pref values

chrome/browser/prefs/pref_value_store.h

Index: chrome/browser/prefs/pref_value_store.h
diff --git a/chrome/browser/prefs/pref_value_store.h b/chrome/browser/prefs/pref_value_store.h
index 30c2017dfe05477ecc7ca43d80ebcfb9d543132b..5728924adb756b4214e946c1c7e3f2463161a905 100644
--- a/chrome/browser/prefs/pref_value_store.h
+++ b/chrome/browser/prefs/pref_value_store.h
@@ -71,6 +71,15 @@ class PrefValueStore {
                 base::Value::Type type,
                 const Value** out_value) const;
 
+  // Gets the recommended value for the given preference name that has the
+  // specified value type. A value stored in the recommended PrefStore that has
+  // the matching |name| but a non-matching |type| is silently ignored. Returns
+  // true if a valid value was found. Most callers should use
+  // Preference::GetRecommendedValue() instead of calling this method directly.
+  bool GetRecommendedValue(const std::string& name,
+                           base::Value::Type type,
+                           const Value** out_value) const;
+
   // These methods return true if a preference with the given name is in the
   // indicated pref store, even if that value is currently being overridden by
   // a higher-priority source.
@@ -188,6 +197,16 @@ class PrefValueStore {
                          PrefStoreType store,
                          const Value** out_value) const;
 
+  // Consults the PrefStores from |first_checked_store| to |last_checked_store|
+  // in decreasing priority order, looking for a value with the given |name| and
+  // |type|. Returns true if a valid value was found. Values with a matching
+  // |name| but a non-matching |type| are silently skipped.
+  bool GetValueInRange(const std::string& name,
+                       base::Value::Type type,
+                       const Value** out_value,
+                       PrefStoreType first_checked_store,
+                       PrefStoreType last_checked_store) const;
+
   // Called upon changes in individual pref stores in order to determine whether
   // the user-visible pref value has changed. Triggers the change notification
   // if the effective value of the preference has changed, or if the store