Fix unit test style in Source/wtf/.

Source/wtf/SaturatedArithmeticTest.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 16 matching lines @@
  * (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/SaturatedArithmetic.h"
 #include <gtest/gtest.h>
 #include <limits.h>
 
-namespace {
+namespace WTF {
 
 TEST(SaturatedArithmeticTest, Addition)
 {
     EXPECT_EQ(0, saturatedAddition(0, 0));
     EXPECT_EQ(1, saturatedAddition(0, 1));
     EXPECT_EQ(100, saturatedAddition(0, 100));
     EXPECT_EQ(150, saturatedAddition(100, 50));
 
     EXPECT_EQ(-1, saturatedAddition(0, -1));
     EXPECT_EQ(0, saturatedAddition(1, -1));
@@ skipping 98 matching lines @@
 
     const unsigned kOverflowed = intMaxForLayoutUnit + 100;
     EXPECT_EQ(getMaxSaturatedSetResultForTesting(kFractionBits),
         saturatedSet(kOverflowed, kFractionBits));
 
     const unsigned kNotOverflowed = intMaxForLayoutUnit - 100;
     EXPECT_EQ((intMaxForLayoutUnit - 100) << kFractionBits,
         saturatedSet(kNotOverflowed, kFractionBits));
 }
 
-
-} // namespace
+} // namespace WTF