Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/core/layout/LayoutMedia.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010 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 42 matching lines @@
   LayoutRect newRect = contentBoxRect();
 
   LayoutState state(*this);
 
   Optional<LayoutUnit> newPanelWidth;
 
 // Iterate the children in reverse order so that the media controls are laid
 // out before the text track container. This is to ensure that the text
 // track rendering has an up-to-date position of the media controls for
 // overlap checking, see LayoutVTTCue.
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   bool seenTextTrackContainer = false;
 #endif
   for (LayoutObject* child = m_children.lastChild(); child;
        child = child->previousSibling()) {
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
     if (child->node()->isMediaControls())
       ASSERT(!seenTextTrackContainer);
     else if (child->node()->isTextTrackContainer())
       seenTextTrackContainer = true;
     else
       ASSERT_NOT_REACHED();
 #endif
 
     // TODO(mlamouri): we miss some layouts because needsLayout returns false in
     // some cases where we want to change the width of the controls because the
@@ skipping 85 matching lines @@
           .x());
   const LayoutUnit newWidth = visibleWidth - absoluteXOffset;
 
   if (newWidth < 0)
     return mediaRect.width();
 
   return std::min(mediaRect.width(), visibleWidth - absoluteXOffset);
 }
 
 }  // namespace blink