Fix unit test style in Source/platform/, part 2.

Source/platform/weborigin/KnownPortsTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "platform/weborigin/KnownPorts.h"
 
 #include <gtest/gtest.h>
 
-using blink::isDefaultPortForProtocol;
-
-namespace {
+namespace blink {
 
 TEST(KnownPortsTest, IsDefaultPortForProtocol)
 {
     struct TestCase {
         const unsigned short port;
         const char* protocol;
         const bool isKnown;
     };
 
     TestCase inputs[] = {
@@ skipping 14 matching lines @@
         { 80, "HTTP", false },
         { 443, "Https", false },
     };
 
     for (TestCase test : inputs) {
         bool result = isDefaultPortForProtocol(test.port, test.protocol);
         EXPECT_EQ(test.isKnown, result);
     }
 }
 
-}
+} // namespace blink