Replace ASSERT with DCHECK in platform/

third_party/WebKit/Source/platform/scroll/ScrollbarThemeMac.mm

 /*
  * Copyright (C) 2008, 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 372 matching lines @@
 IntRect ScrollbarThemeMac::ForwardButtonRect(
     const ScrollbarThemeClient& scrollbar,
     ScrollbarPart part,
     bool painting) {
   ASSERT(ButtonsPlacement() == kWebScrollbarButtonsPlacementNone);
   return IntRect();
 }
 
 IntRect ScrollbarThemeMac::TrackRect(const ScrollbarThemeClient& scrollbar,
                                      bool painting) {
-  ASSERT(!HasButtons(scrollbar));
+  DCHECK(!HasButtons(scrollbar));
   return scrollbar.FrameRect();
 }
 
 int ScrollbarThemeMac::MinimumThumbLength(
     const ScrollbarThemeClient& scrollbar) {
   return [PainterForScrollbar(scrollbar) knobMinLength];
 }
 
 void ScrollbarThemeMac::UpdateEnabledState(
     const ScrollbarThemeClient& scrollbar) {
   [PainterForScrollbar(scrollbar) setEnabled:scrollbar.Enabled()];
 }
 
 float ScrollbarThemeMac::ThumbOpacity(
     const ScrollbarThemeClient& scrollbar) const {
   ScrollbarPainter scrollbar_painter = PainterForScrollbar(scrollbar);
   return [scrollbar_painter knobAlpha];
 }
 
 // static
 NSScrollerStyle ScrollbarThemeMac::RecommendedScrollerStyle() {
   if (RuntimeEnabledFeatures::overlayScrollbarsEnabled())
     return NSScrollerStyleOverlay;
   return g_preferred_scroller_style;
 }
 
 }  // namespace blink