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

chrome/browser/extensions/event_listener_map.cc

Index: chrome/browser/extensions/event_listener_map.cc
diff --git a/chrome/browser/extensions/event_listener_map.cc b/chrome/browser/extensions/event_listener_map.cc
index 5843714cf3c0fa007400a2fe0f3b3e1af7b8c70e..2ea49e92882a26270228d94e86cf37a4fcb1fe65 100644
--- a/chrome/browser/extensions/event_listener_map.cc
+++ b/chrome/browser/extensions/event_listener_map.cc
@@ -168,7 +168,7 @@ void EventListenerMap::LoadFilteredLazyListeners(
     const DictionaryValue& filtered) {
   for (DictionaryValue::Iterator it(filtered); !it.IsAtEnd(); it.Advance()) {
     // We skip entries if they are malformed.
-    const ListValue* filter_list = NULL;
+    const base::ListValue* filter_list = NULL;
     if (!it.value().GetAsList(&filter_list))
       continue;
     for (size_t i = 0; i < filter_list->GetSize(); i++) {