Remove ASSERT_UNUSED

third_party/WebKit/Source/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 467 matching lines @@
 }
 
 - (NSRect)convertRectFromBacking:(NSRect)aRect {
   return aRect;
 }
 
 - (NSPoint)mouseLocationInScrollerForScrollerImp:(id)scrollerImp {
   if (!_scrollbar)
     return NSZeroPoint;
 
-  ASSERT_UNUSED(scrollerImp,
-                scrollerImp == scrollbarPainterForScrollbar(*_scrollbar));
+  DCHECK_EQ(scrollerImp, scrollbarPainterForScrollbar(*_scrollbar));
 
   return _scrollbar->convertFromContainingWidget(
       _scrollbar->getScrollableArea()->lastKnownMousePosition());
 }
 
 - (void)setUpAlphaAnimation:
             (RetainPtr<BlinkScrollbarPartAnimation>&)scrollbarPartAnimation
             scrollerPainter:(ScrollbarPainter)scrollerPainter
                        part:(blink::ScrollbarPart)part
              animateAlphaTo:(CGFloat)newAlpha
@@ skipping 614 matching lines @@
     rectInViewCoordinates =
         verticalScrollbar->convertToContainingWidget(scrollerThumb);
 
   if (rectInViewCoordinates == m_visibleScrollerThumbRect)
     return;
 
   m_visibleScrollerThumbRect = rectInViewCoordinates;
 }
 
 }  // namespace blink