Finish removing WebKitSystemInterface from Blink.

Source/core/platform/mac/ScrollAnimatorMac.mm

 /*
  * Copyright (C) 2010, 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 19 matching lines @@
 #include "core/platform/PlatformGestureEvent.h"
 #include "core/platform/PlatformWheelEvent.h"
 #include "core/platform/ScrollView.h"
 #include "core/platform/ScrollableArea.h"
 #include "core/platform/ScrollbarTheme.h"
 #include "core/platform/graphics/FloatPoint.h"
 #include "core/platform/mac/BlockExceptions.h"
 #include "core/platform/mac/EmptyProtocolDefinitions.h"
 #include "core/platform/mac/NSScrollerImpDetails.h"
 #include "core/platform/mac/ScrollbarThemeMac.h"
-#include "core/platform/mac/WebCoreSystemInterface.h"
 #include <wtf/MainThread.h>
 #include <wtf/PassOwnPtr.h>
 #include <wtf/UnusedParam.h>
 
 using namespace WebCore;
 using namespace std;
 
 static bool supportsUIStateTransitionProgress()
 {
     // FIXME: This is temporary until all platforms that support ScrollbarPainter support this part of the API.
@@ skipping 1234 matching lines @@
         rectInViewCoordinates = verticalScrollbar->convertToContainingView(scrollerThumb);
 
     if (rectInViewCoordinates == m_visibleScrollerThumbRect)
         return;
 
     m_scrollableArea->setVisibleScrollerThumbRect(rectInViewCoordinates);
     m_visibleScrollerThumbRect = rectInViewCoordinates;
 }
 
 } // namespace WebCore