Cleanup namespace usage in modules/.

Source/modules/indexeddb/IDBKeyPathTest.cpp

 /*
  * Copyright (C) 2010 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 15 matching lines @@
 #include "config.h"
 #include "modules/indexeddb/IDBKeyPath.h"
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "bindings/modules/v8/IDBBindingUtilities.h"
 #include "modules/indexeddb/IDBKey.h"
 #include "wtf/Vector.h"
 
 #include <gtest/gtest.h>
 
-using namespace blink;
-
+namespace blink {
 namespace {
 
 void checkKeyPath(const String& keyPath, const Vector<String>& expected, int parserError)
 {
     IDBKeyPath idbKeyPath(keyPath);
     ASSERT_EQ(idbKeyPath.type(), IDBKeyPath::StringType);
     ASSERT_EQ(idbKeyPath.isValid(), (parserError == IDBKeyPathParseErrorNone));
 
     IDBKeyPathParseError error;
     Vector<String> keyPathElements;
@@ skipping 71 matching lines @@
 
 TEST(IDBKeyPathTest, InvalidKeyPath5)
 {
     Vector<String> expected;
     String keyPath("foo..bar..baz");
     expected.append(String("foo"));
     checkKeyPath(keyPath, expected, 3);
 }
 
 } // namespace
+} // namespace blink