Remove the wrapper functions content::RecordAction et al

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index eaa442804cb0e99b9fe66a601ae6514494623348..f6210d0751da20bf43af9db222735e2c9d7b1aa6 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -19,7 +19,6 @@
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
-#include "base/metrics/user_metrics_action.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ -118,7 +117,6 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "v8/include/v8.h"
 
-using base::UserMetricsAction;
 using blink::WebDataSource;
 using blink::WebDocument;
 using blink::WebScopedUserGesture;