Fix unit test style in Source/web/.

Source/web/tests/ScrollingCoordinatorTest.cpp

Index: Source/web/tests/ScrollingCoordinatorTest.cpp
diff --git a/Source/web/tests/ScrollingCoordinatorTest.cpp b/Source/web/tests/ScrollingCoordinatorTest.cpp
index 59c5cf87b57a8b38bf44df8cb8d23512c0c47a45..da6206df48d23c0695e614c9cbd78c8a66991c80 100644
--- a/Source/web/tests/ScrollingCoordinatorTest.cpp
+++ b/Source/web/tests/ScrollingCoordinatorTest.cpp
@@ -23,7 +23,6 @@
  */
 
 #include "config.h"
-
 #include "core/page/scrolling/ScrollingCoordinator.h"
 
 #include "core/layout/LayoutPart.h"
@@ -45,9 +44,7 @@
 #include "web/tests/FrameTestHelpers.h"
 #include <gtest/gtest.h>
 
-using namespace blink;
-
-namespace {
+namespace blink {
 
 class ScrollingCoordinatorTest : public testing::Test {
 public:
@@ -64,7 +61,7 @@ public:
             webViewImpl()->mainFrameImpl()->frame()->view()->layoutView()->compositor()->rootGraphicsLayer());
     }
 
-    virtual ~ScrollingCoordinatorTest()
+    ~ScrollingCoordinatorTest() override
     {
         Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
     }
@@ -608,4 +605,4 @@ TEST_F(ScrollingCoordinatorTest, FixedPositionLosingBackingShouldTriggerMainThre
     EXPECT_TRUE(scrollLayer->shouldScrollOnMainThread());
 }
 
-} // namespace
+} // namespace blink