Fix unit test style in Source/web/.

Source/web/tests/WebSelectorTest.cpp

Index: Source/web/tests/WebSelectorTest.cpp
diff --git a/Source/web/tests/WebSelectorTest.cpp b/Source/web/tests/WebSelectorTest.cpp
index c0a5193a33f532b223c802d21301ae1c1a488c2a..28b8f7adf51b08af3d251c9d027bde83a596e818 100644
--- a/Source/web/tests/WebSelectorTest.cpp
+++ b/Source/web/tests/WebSelectorTest.cpp
@@ -35,9 +35,7 @@
 #include "public/platform/WebUnitTestSupport.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(WebSelectorTest, Canonicalizes)
 {
@@ -57,4 +55,4 @@ TEST(WebSelectorTest, Restricts)
     EXPECT_EQ("h1, h2[style=\"foobar\"].cls", canonicalizeSelector("h1,h2[style=\"foobar\"].cls", WebSelectorTypeCompound).utf8());
 }
 
-} // namespace
+} // namespace blink