Replace ASSERT()s with DCHECK*() in core/html/*.{cpp,h}.

third_party/WebKit/Source/core/html/HTMLDialogElement.cpp

 /*
  * Copyright (C) 2012 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:
  *
  * 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
@@ skipping 159 matching lines @@
 
 void HTMLDialogElement::removedFrom(ContainerNode* insertionPoint)
 {
     HTMLElement::removedFrom(insertionPoint);
     setNotCentered();
     // FIXME: We should call inertSubtreesChanged() here.
 }
 
 void HTMLDialogElement::setCentered(LayoutUnit centeredPosition)
 {
-    ASSERT(m_centeringMode == NeedsCentering);
+    DCHECK_EQ(m_centeringMode, NeedsCentering);
     m_centeredPosition = centeredPosition;
     m_centeringMode = Centered;
 }
 
 void HTMLDialogElement::setNotCentered()
 {
     m_centeringMode = NotCentered;
 }
 
 bool HTMLDialogElement::isPresentationAttribute(const QualifiedName& name) const
@@ skipping 10 matching lines @@
 {
     if (event->type() == EventTypeNames::cancel) {
         closeDialog();
         event->setDefaultHandled();
         return;
     }
     HTMLElement::defaultEventHandler(event);
 }
 
 } // namespace blink