Fix unit test style in Source/web/.

Source/platform/scroll/ScrollAnimatorNone.h

Index: Source/platform/scroll/ScrollAnimatorNone.h
diff --git a/Source/platform/scroll/ScrollAnimatorNone.h b/Source/platform/scroll/ScrollAnimatorNone.h
index 30292a25da0b0868fcbf8de5d48c8cbd2af1e4c3..0bc4eb124fe02eb05c3bb537aef5d3315c4a070b 100644
--- a/Source/platform/scroll/ScrollAnimatorNone.h
+++ b/Source/platform/scroll/ScrollAnimatorNone.h
@@ -35,10 +35,10 @@
 #include "platform/geometry/FloatPoint.h"
 #include "platform/scroll/ScrollAnimator.h"
 
-class ScrollAnimatorNoneTest;
-
 namespace blink {
 
+class ScrollAnimatorNoneTest;
+
 class PLATFORM_EXPORT ScrollAnimatorNone : public ScrollAnimator {
 public:
     explicit ScrollAnimatorNone(ScrollableArea*);
@@ -91,7 +91,7 @@ protected:
 
     Parameters parametersForScrollGranularity(ScrollGranularity) const;
 
-    friend class ::ScrollAnimatorNoneTest;
+    friend class ScrollAnimatorNoneTest;
 
     struct PLATFORM_EXPORT PerAxisData {
         PerAxisData(float* currentPos, int visibleLength);