Fix namespace for src/ui/display/.

ui/display/manager/chromeos/test/action_logger.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/display/manager/chromeos/test/action_logger.h"
 
-namespace ui {
+namespace display {
 namespace test {
 
 ActionLogger::ActionLogger() {}
 
 ActionLogger::~ActionLogger() {}
 
 void ActionLogger::AppendAction(const std::string& action) {
   if (!actions_.empty())
     actions_ += ",";
   actions_ += action;
 }
 
 std::string ActionLogger::GetActionsAndClear() {
   std::string actions = actions_;
   actions_.clear();
   return actions;
 }
 
 }  // namespace test
-}  // namespace ui
+}  // namespace display