Fix unit test style in Source/platform/, part 2.

Source/platform/text/LocaleICUTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #include "config.h"
 #include "platform/text/LocaleICU.h"
 
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/StringBuilder.h"
 #include <gtest/gtest.h>
 #include <unicode/uvernum.h>
 
-using namespace blink;
+namespace blink {
 
 class LocaleICUTest : public ::testing::Test {
 public:
     // Labels class is used for printing results in EXPECT_EQ macro.
     class Labels {
     public:
         Labels(const Vector<String> labels)
             : m_labels(labels)
         {
         }
@@ skipping 238 matching lines @@
     // Test some of major locales.
     testNumbers("ar");
     testNumbers("de_DE");
     testNumbers("es_ES");
     testNumbers("ja_JP");
     testNumbers("ko_KR");
     testNumbers("zh_CN");
     testNumbers("zh_HK");
     testNumbers("zh_TW");
 }
+
+} // namespace blink