Fix unit test style in Source/web/.

Source/web/tests/WebUserGestureTokenTest.cpp

Index: Source/web/tests/WebUserGestureTokenTest.cpp
diff --git a/Source/web/tests/WebUserGestureTokenTest.cpp b/Source/web/tests/WebUserGestureTokenTest.cpp
index bc0e18fefe2e3b98b45ba9549c63b8f78de0466e..df77a110c5b3236a59055af918fae7bd2ffb165a 100644
--- a/Source/web/tests/WebUserGestureTokenTest.cpp
+++ b/Source/web/tests/WebUserGestureTokenTest.cpp
@@ -29,7 +29,6 @@
  */
 
 #include "config.h"
-
 #include "public/web/WebUserGestureToken.h"
 
 #include "platform/UserGestureIndicator.h"
@@ -37,9 +36,7 @@
 #include "public/web/WebUserGestureIndicator.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(WebUserGestureTokenTest, Basic)
 {
@@ -80,4 +77,4 @@ TEST(WebUserGestureTokenTest, Basic)
     EXPECT_TRUE(UserGestureIndicator::processedUserGestureSinceLoad());
 }
 
-}
+} // namespace blink