Add missing closing namespace comments to wtf.

third_party/WebKit/Source/wtf/ASCIICTypeTest.cpp

 // Copyright 2015 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 "wtf/ASCIICType.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace WTF {
 
 TEST(ASCIICTypeTest, ASCIICaseFoldTable)
 {
     LChar symbol = 0xff;
     while (symbol--) {
         EXPECT_EQ(toASCIILower<LChar>(symbol), ASCIICaseFoldTable[symbol]);
     }
 }
 
-}
+} // namespace WTF