Allow assertions to be enabled in Blink Release builds.

Source/core/events/TreeScopeEventContext.h

 /*
  * Copyright (C) 2014 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 54 matching lines @@
     bool isInclusiveAncestorOf(const TreeScopeEventContext&);
     void addChild(TreeScopeEventContext& child) { m_children.append(&child); }
 
     // For ancestor-descendant relationship check in Q(1).
     // Preprocessing takes O(N).
     int calculatePrePostOrderNumber(int orderNumber);
 
 private:
     TreeScopeEventContext(TreeScope&);
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     bool isUnreachableNode(EventTarget&);
 #endif
 
     RawPtrWillBeMember<TreeScope> m_treeScope;
     RefPtrWillBeMember<EventTarget> m_target;
     RefPtrWillBeMember<EventTarget> m_relatedTarget;
     RefPtrWillBeMember<StaticNodeList> m_eventPath;
     RefPtrWillBeMember<TouchEventContext> m_touchEventContext;
 
     WillBeHeapVector<RawPtrWillBeMember<TreeScopeEventContext> > m_children;
     int m_preOrder;
     int m_postOrder;
 };
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 inline bool TreeScopeEventContext::isUnreachableNode(EventTarget& target)
 {
     // FIXME: Checks also for SVG elements.
     return target.toNode() && !target.toNode()->isSVGElement() && !target.toNode()->treeScope().isInclusiveOlderSiblingShadowRootOrAncestorTreeScopeOf(treeScope());
 }
 #endif
 
 inline void TreeScopeEventContext::setTarget(PassRefPtrWillBeRawPtr<EventTarget> target)
 {
     ASSERT(target);
@@ skipping 10 matching lines @@
 
 inline bool TreeScopeEventContext::isInclusiveAncestorOf(const TreeScopeEventContext& other)
 {
     ASSERT(m_preOrder != -1 && m_postOrder != -1 && other.m_preOrder != -1 && other.m_postOrder != -1);
     return m_preOrder <= other.m_preOrder && other.m_postOrder <= m_postOrder;
 }
 
 }
 
 #endif // TreeScopeEventContext_h