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

ui/webui/web_ui_util.h

Index: ui/webui/web_ui_util.h
diff --git a/ui/webui/web_ui_util.h b/ui/webui/web_ui_util.h
index c1e3635dd81be41aa39e93b4c15ce97d1f0266e6..a3d297c0b85655bef65289c4753d54bb1fb21e2d 100644
--- a/ui/webui/web_ui_util.h
+++ b/ui/webui/web_ui_util.h
@@ -33,8 +33,9 @@ UI_EXPORT std::string GetBitmapDataUrlFromResource(int resource_id);
 // Extracts a disposition from click event arguments. |args| should contain
 // an integer button and booleans alt key, ctrl key, meta key, and shift key
 // (in that order), starting at |start_index|.
-UI_EXPORT WindowOpenDisposition GetDispositionFromClick(const ListValue* args,
-                                                        int start_index);
+UI_EXPORT WindowOpenDisposition GetDispositionFromClick(
+    const base::ListValue* args,
+    int start_index);
 
 // Given a scale factor such as "1x", "2x" or "1.99x", sets |scale_factor| to
 // the closest ScaleFactor enum value for this scale factor. If string can not