Fix unit test style in Source/wtf/.

Source/wtf/TreeNodeTest.cpp

 /*
  * Copyright (C) 2012 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
-
 #include "wtf/TreeNode.h"
 
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include <gtest/gtest.h>
 
-namespace {
+namespace WTF {
 
 class TestTree : public RefCounted<TestTree>, public TreeNode<TestTree> {
 public:
     static PassRefPtr<TestTree> create() { return adoptRef(new TestTree()); }
 };
 
 TEST(TreeNodeTest, AppendChild)
 {
     RefPtr<TestTree> root = TestTree::create();
     RefPtr<TestTree> firstChild = TestTree::create();
@@ skipping 180 matching lines @@
         trio.grandChild.get(), trio.middleChild.get(), trio.lastChild.get(), trio.root.get()
     };
 
     unsigned orderIndex = 0;
     for (TestTree* node = traverseFirstPostOrder(trio.root.get()); node; node = traverseNextPostOrder(node), orderIndex++)
         EXPECT_EQ(node, order[orderIndex]);
     EXPECT_EQ(orderIndex, sizeof(order) / sizeof(TestTree*));
 
 }
 
-
-} // namespace
+} // namespace WTF