Fix unit test style in Source/platform/, part 1.

Source/platform/ClockTest.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 14 matching lines @@
  * 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 "platform/Clock.h"
 
 #include "wtf/OwnPtr.h"
-
 #include <gtest/gtest.h>
 
-using blink::Clock;
-
-namespace {
+namespace blink {
 
 TEST(Clock, StartStop)
 {
     OwnPtr<Clock> clock = Clock::create();
     EXPECT_FALSE(clock->isRunning());
     clock->start();
     EXPECT_TRUE(clock->isRunning());
     clock->stop();
     EXPECT_FALSE(clock->isRunning());
 }
 
 TEST(Clock, SetCurrentTimeThenStartStop)
 {
     OwnPtr<Clock> clock = Clock::create();
     clock->setCurrentTime(10.0);
     clock->start();
     clock->stop();
     EXPECT_TRUE(clock->currentTime() >= 10.0);
 }
 
-} // namespace
+} // namespace blink