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

Source/core/css/AffectedByFocusTest.cpp

Index: Source/core/css/AffectedByFocusTest.cpp
diff --git a/Source/core/css/AffectedByFocusTest.cpp b/Source/core/css/AffectedByFocusTest.cpp
index c2efe97d62443272627faf0dec59ec140813f9b2..ee2532cc4237ca73772c350536e5ae9d4f176fbc 100644
--- a/Source/core/css/AffectedByFocusTest.cpp
+++ b/Source/core/css/AffectedByFocusTest.cpp
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "config.h"
+
 #include "core/HTMLNames.h"
 #include "core/dom/Element.h"
 #include "core/dom/ElementTraversal.h"
@@ -14,22 +15,19 @@
 #include "core/testing/DummyPageHolder.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-using namespace HTMLNames;
+namespace blink {
 
-namespace {
+using namespace HTMLNames;
 
 class AffectedByFocusTest : public ::testing::Test {
-
 protected:
-
     struct ElementResult {
         const blink::HTMLQualifiedName tag;
         bool affectedBy;
         bool childrenOrSiblingsAffectedBy;
     };
 
-    virtual void SetUp() override;
+    void SetUp() override;
 
     HTMLDocument& document() const { return *m_document; }
 
@@ -314,4 +312,4 @@ TEST_F(AffectedByFocusTest, NoInvalidationSetFocusUpdate)
     ASSERT_EQ(1U, accessCount);
 }
 
-} // namespace
+} // namespace blink