Cleanup namespace usage in modules/.

Source/modules/websockets/WebSocketExtensionParserTest.cpp

 /*
  * Copyright (C) 2013 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 "modules/websockets/WebSocketExtensionParser.h"
 
 #include "wtf/HashMap.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/WTFString.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-
+namespace blink {
 namespace {
 
 TEST(WebSocketExtensionParserTest, simpleExtension)
 {
     CString input("extension");
     String extension;
     HashMap<String, String> parameters;
     WebSocketExtensionParser parser(input.data(), input.data() + input.length());
 
     ASSERT_TRUE(parser.parseExtension(extension, parameters));
@@ skipping 125 matching lines @@
 {
     CString input("extension; foo=\"FO O\"");
     String extension;
     HashMap<String, String> parameters;
     WebSocketExtensionParser parser(input.data(), input.data() + input.length());
 
     ASSERT_FALSE(parser.parseExtension(extension, parameters));
 }
 
 } // namespace
+} // namespace blink