Fix unit test style in Source/web/.

Source/web/tests/WebURLResponseTest.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 11 matching lines @@
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (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 "public/platform/WebURLResponse.h"
 
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 class TestExtraData : public WebURLResponse::ExtraData {
 public:
     explicit TestExtraData(bool* alive)
         : m_alive(alive)
     {
         *alive = true;
     }
 
-    virtual ~TestExtraData() { *m_alive = false; }
+    ~TestExtraData() override { *m_alive = false; }
 
 private:
     bool* m_alive;
 };
 
 TEST(WebURLResponseTest, ExtraData)
 {
     bool alive = false;
     {
         WebURLResponse urlResponse;
         TestExtraData* extraData = new TestExtraData(&alive);
         EXPECT_TRUE(alive);
 
         urlResponse.initialize();
         urlResponse.setExtraData(extraData);
         EXPECT_EQ(extraData, urlResponse.extraData());
         {
             WebURLResponse otherUrlResponse = urlResponse;
             EXPECT_TRUE(alive);
             EXPECT_EQ(extraData, otherUrlResponse.extraData());
             EXPECT_EQ(extraData, urlResponse.extraData());
         }
         EXPECT_TRUE(alive);
         EXPECT_EQ(extraData, urlResponse.extraData());
     }
     EXPECT_FALSE(alive);
 }
 
-} // namespace
+} // namespace blink