Signed settings refactoring: Proper caching and more tests.

chrome/browser/prefs/pref_value_map.h

Index: chrome/browser/prefs/pref_value_map.h
diff --git a/chrome/browser/prefs/pref_value_map.h b/chrome/browser/prefs/pref_value_map.h
index f8995ce386fe9af6003cafb44942dc234154a488..291c7b42a9bdf1ce4f05393d7a1254785eefc563 100644
--- a/chrome/browser/prefs/pref_value_map.h
+++ b/chrome/browser/prefs/pref_value_map.h
@@ -51,6 +51,9 @@ class PrefValueMap {
   // the value was found and of the proper type.
   bool GetBoolean(const std::string& key, bool* value) const;
 
+  // Sets the value for |key| to the boolean |value|.
+  void SetBoolean(const std::string& key, bool value);
+
   // Gets a string value for |key| and stores it in |value|. Returns true if
   // the value was found and of the proper type.
   bool GetString(const std::string& key, std::string* value) const;