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

Source/core/style/ComputedStyleTest.cpp

Index: Source/core/style/ComputedStyleTest.cpp
diff --git a/Source/core/style/ComputedStyleTest.cpp b/Source/core/style/ComputedStyleTest.cpp
index 107985a374323c8e8ddf76581219257e6c065160..469ebb263aaff217711e96c6c7725edfd0c9ab84 100644
--- a/Source/core/style/ComputedStyleTest.cpp
+++ b/Source/core/style/ComputedStyleTest.cpp
@@ -7,12 +7,9 @@
 
 #include "core/layout/ClipPathOperation.h"
 #include "core/style/ShapeValue.h"
-
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 TEST(ComputedStyleTest, ShapeOutsideBoxEqual)
 {
@@ -50,4 +47,4 @@ TEST(ComputedStyleTest, ClipPathEqual)
     ASSERT_EQ(*style1, *style2);
 }
 
-}
+} // namespace blink