Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/browser/extensions/extension_web_ui.h

Index: chrome/browser/extensions/extension_web_ui.h
diff --git a/chrome/browser/extensions/extension_web_ui.h b/chrome/browser/extensions/extension_web_ui.h
index f44d14b4ce7c0b25f3f50d79d2a99e75ff9bd841..f317cd4d8df8a0c6f932a73d05c80ac3c1c3f49a 100644
--- a/chrome/browser/extensions/extension_web_ui.h
+++ b/chrome/browser/extensions/extension_web_ui.h
@@ -50,7 +50,7 @@ class ExtensionWebUI : public content::WebUIController {
       const extensions::Extension::URLOverrideMap& overrides);
   static void UnregisterChromeURLOverride(const std::string& page,
                                           Profile* profile,
-                                          base::Value* override);
+                                          const base::Value* override);
 
   // Called from BrowserPrefs
   static void RegisterUserPrefs(PrefService* prefs);
@@ -66,7 +66,7 @@ class ExtensionWebUI : public content::WebUIController {
   static void UnregisterAndReplaceOverride(const std::string& page,
                                            Profile* profile,
                                            base::ListValue* list,
-                                           base::Value* override);
+                                           const base::Value* override);
 
   // TODO(aa): This seems out of place. Why is it not with the event routers for
   // the other extension APIs?