Replace DCHECK with DCHECK_op and split some DCHECKs wherever necessary

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/ScrollAnchor.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/UseCounter.h"
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/api/LayoutBoxItem.h"
@@ skipping 12 matching lines @@
       m_scrollAnchorDisablingStyleChanged(false),
       m_queued(false) {}
 
 ScrollAnchor::ScrollAnchor(ScrollableArea* scroller) : ScrollAnchor() {
   setScroller(scroller);
 }
 
 ScrollAnchor::~ScrollAnchor() {}
 
 void ScrollAnchor::setScroller(ScrollableArea* scroller) {
-  DCHECK(m_scroller != scroller);
+  DCHECK_NE(m_scroller, scroller);
   DCHECK(scroller);
   DCHECK(scroller->isRootFrameViewport() || scroller->isFrameView() ||
          scroller->isPaintLayerScrollableArea());
   m_scroller = scroller;
   clearSelf();
 }
 
 // TODO(pilgrim): Replace all instances of scrollerLayoutBox with
 // scrollerLayoutBoxItem, https://crbug.com/499321
 static LayoutBox* scrollerLayoutBox(const ScrollableArea* scroller) {
@@ skipping 150 matching lines @@
           if (findAnchorRecursive(descendant))
             return true;
         }
       }
     }
   }
 
   if (result.status == Constrain)
     return true;
 
-  DCHECK(result.status == Continue);
+  DCHECK_EQ(result.status, Continue);
   return false;
 }
 
 bool ScrollAnchor::computeScrollAnchorDisablingStyleChanged() {
   LayoutObject* current = anchorObject();
   if (!current)
     return false;
 
   LayoutObject* scrollerBox = scrollerLayoutBox(m_scroller);
   while (true) {
@@ skipping 135 matching lines @@
 bool ScrollAnchor::refersTo(const LayoutObject* layoutObject) const {
   return m_anchorObject == layoutObject;
 }
 
 void ScrollAnchor::notifyRemoved(LayoutObject* layoutObject) {
   if (m_anchorObject == layoutObject)
     clearSelf();
 }
 
 }  // namespace blink