Convert most of extensions and some other random stuff to using the base namespace for Values.

chrome/browser/extensions/api/storage/settings_frontend.cc

Index: chrome/browser/extensions/api/storage/settings_frontend.cc
diff --git a/chrome/browser/extensions/api/storage/settings_frontend.cc b/chrome/browser/extensions/api/storage/settings_frontend.cc
index dece66999ce6b8d885b725258caf2e68a9e8c857..a14ed698d9d5b5b842931cdcd701597d2ee44048 100644
--- a/chrome/browser/extensions/api/storage/settings_frontend.cc
+++ b/chrome/browser/extensions/api/storage/settings_frontend.cc
@@ -44,7 +44,7 @@ class DefaultObserver : public SettingsObserver {
       const std::string& change_json) OVERRIDE {
     // TODO(gdk): This is a temporary hack while the refactoring for
     // string-based event payloads is removed. http://crbug.com/136045
-    scoped_ptr<ListValue> args(new ListValue());
+    scoped_ptr<base::ListValue> args(new base::ListValue());
     args->Append(base::JSONReader::Read(change_json));
     args->Append(Value::CreateStringValue(settings_namespace::ToString(
         settings_namespace)));