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

Source/core/animation/animatable/AnimatableDoubleTest.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/animatable/AnimatableDouble.h"
 
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(AnimationAnimatableDoubleTest, Create)
 {
     EXPECT_TRUE(static_cast<bool>(AnimatableDouble::create(5).get()));
     EXPECT_TRUE(static_cast<bool>(AnimatableDouble::create(10).get()));
 }
 
 TEST(AnimationAnimatableDoubleTest, Equal)
 {
     EXPECT_TRUE(AnimatableDouble::create(10)->equals(AnimatableDouble::create(10).get()));
@@ skipping 13 matching lines @@
     RefPtrWillBeRawPtr<AnimatableDouble> to20 = AnimatableDouble::create(20);
     EXPECT_EQ(5, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), -0.5).get())->toDouble());
     EXPECT_EQ(10, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), 0).get())->toDouble());
     EXPECT_EQ(14, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), 0.4).get())->toDouble());
     EXPECT_EQ(15, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), 0.5).get())->toDouble());
     EXPECT_EQ(16, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), 0.6).get())->toDouble());
     EXPECT_EQ(20, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), 1).get())->toDouble());
     EXPECT_EQ(25, toAnimatableDouble(AnimatableValue::interpolate(from10.get(), to20.get(), 1.5).get())->toDouble());
 }
 
-}
+} // namespace blink