Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/modules/accessibility/AXNodeObject.h

 /*
  * 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 37 matching lines @@
 
  public:
   static AXNodeObject* create(Node*, AXObjectCacheImpl&);
   ~AXNodeObject() override;
   DECLARE_VIRTUAL_TRACE();
 
  protected:
   // Protected data.
   AccessibilityRole m_ariaRole;
   bool m_childrenDirty;
-#if ENABLE(ASSERT)
-  bool m_initialized;
+#if DCHECK_IS_ON()
+  bool m_initialized = false;
 #endif
 
   bool computeAccessibilityIsIgnored(IgnoredReasons* = nullptr) const override;
   const AXObject* inheritsPresentationalRoleFrom() const override;
   virtual AccessibilityRole determineAccessibilityRole();
   virtual AccessibilityRole nativeAccessibilityRoleIgnoringAria() const;
   String accessibilityDescriptionForElements(
       HeapVector<Member<Element>>& elements) const;
   void alterSliderValue(bool increase);
   AXObject* activeDescendant() override;
@@ skipping 163 matching lines @@
                                NameSources*,
                                bool* foundTextAlternative) const;
   float stepValueForRange() const;
   bool isDescendantOfElementType(const HTMLQualifiedName& tagName) const;
   String placeholderFromNativeAttribute() const;
 };
 
 }  // namespace blink
 
 #endif  // AXNodeObject_h