Replace DCHECK with DCHECK_op and split some DCHECKs wherever necessary

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

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1645 matching lines @@
   }
 }
 
 ItemPosition LayoutFlexibleBox::alignmentForChild(
     const LayoutBox& child) const {
   ItemPosition align =
       child.styleRef()
           .resolvedAlignSelf(selfAlignmentNormalBehavior(),
                              child.isAnonymous() ? style() : nullptr)
           .position();
-  DCHECK(align != ItemPositionAuto && align != ItemPositionNormal);
+  DCHECK_NE(align, ItemPositionAuto);
+  DCHECK_NE(align, ItemPositionNormal);
 
   if (align == ItemPositionBaseline && hasOrthogonalFlow(child))
     align = ItemPositionFlexStart;
 
   if (style()->flexWrap() == FlexWrapReverse) {
     if (align == ItemPositionFlexStart)
       align = ItemPositionFlexEnd;
     else if (align == ItemPositionFlexEnd)
       align = ItemPositionFlexStart;
   }
@@ skipping 489 matching lines @@
       LayoutUnit originalOffset =
           lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
       LayoutUnit newOffset =
           contentExtent - originalOffset - lineCrossAxisExtent;
       adjustAlignmentForChild(*flexItem.box, newOffset - originalOffset);
     }
   }
 }
 
 }  // namespace blink