Fix unit test style in Source/web/.

Source/web/tests/WebSelectorTest.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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/web/WebSelector.h"
 
 #include "public/platform/WebString.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(WebSelectorTest, Canonicalizes)
 {
     EXPECT_EQ("h1, h2[style=\"foobar\"] span", canonicalizeSelector("h1,h2[style='foobar']    span").utf8());
     EXPECT_EQ("h1, h2[style=\"foobar\"] span", canonicalizeSelector("h1, h2[style=\"foobar\"] span").utf8());
 }
 
 TEST(WebSelectorTest, Checks)
 {
     EXPECT_EQ("", canonicalizeSelector("h1..h2").utf8());
     EXPECT_EQ("", canonicalizeSelector("h1..h2", WebSelectorTypeCompound).utf8());
 }
 
 TEST(WebSelectorTest, Restricts)
 {
     EXPECT_EQ("", canonicalizeSelector("h1 span,h2", WebSelectorTypeCompound).utf8());
     EXPECT_EQ("h1, h2[style=\"foobar\"].cls", canonicalizeSelector("h1,h2[style=\"foobar\"].cls", WebSelectorTypeCompound).utf8());
 }
 
-} // namespace
+} // namespace blink