Fix unit test style in core/{animation,css,fetch,frame,layout,style,timing}/.

Source/core/animation/TimingCalculationsTest.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 15 matching lines @@
  * 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 "core/animation/TimingCalculations.h"
 
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(AnimationTimingCalculationsTest, ActiveTime)
 {
     Timing timing;
 
     // calculateActiveTime(activeDuration, fillMode, localTime, parentPhase, phase, timing)
 
     // Before Phase
     timing.startDelay = 10;
     EXPECT_TRUE(isNull(calculateActiveTime(20, Timing::FillModeForwards, 0, AnimationEffect::PhaseActive, AnimationEffect::PhaseBefore, timing)));
@@ skipping 155 matching lines @@
 
     // Timing function when iterationDuration is infinity
     timing.direction = Timing::PlaybackDirectionNormal;
     EXPECT_EQ(0, calculateTransformedTime(0, std::numeric_limits<double>::infinity(), 0, timing));
     EXPECT_EQ(1, calculateTransformedTime(0, std::numeric_limits<double>::infinity(), 1, timing));
     timing.direction = Timing::PlaybackDirectionReverse;
     EXPECT_EQ(std::numeric_limits<double>::infinity(), calculateTransformedTime(0, std::numeric_limits<double>::infinity(), 0, timing));
     EXPECT_EQ(std::numeric_limits<double>::infinity(), calculateTransformedTime(0, std::numeric_limits<double>::infinity(), 1, timing));
 }
 
-}
+} // namespace blink