Allow assertions to be enabled in Blink Release builds.

Source/core/dom/ContainerNode.cpp

Index: Source/core/dom/ContainerNode.cpp
diff --git a/Source/core/dom/ContainerNode.cpp b/Source/core/dom/ContainerNode.cpp
index 6d8dc594f20539c21e4f8d93fbd9c4eee9d1dbf5..5aad514a1910483415c10a66de36d2b2049bf7fb 100644
--- a/Source/core/dom/ContainerNode.cpp
+++ b/Source/core/dom/ContainerNode.cpp
@@ -60,7 +60,7 @@ using namespace HTMLNames;
 static void dispatchChildInsertionEvents(Node&);
 static void dispatchChildRemovalEvents(Node&);
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 unsigned NoEventDispatchAssertion::s_count = 0;
 #endif
 
@@ -486,7 +486,7 @@ void ContainerNode::addChildNodesToDeletionQueue(Node*& head, Node*& tail, Conta
             next->setPreviousSibling(0);
 
         if (!n->refCount()) {
-#if SECURITY_ASSERT_ENABLED
+#if ENABLE(SECURITY_ASSERT)
             n->m_deletionHasBegun = true;
 #endif
             // Add the node to the list of nodes to be deleted.
@@ -1377,7 +1377,7 @@ Element* ContainerNode::getElementById(const AtomicString& id) const
     return 0;
 }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 bool childAttachedAllowedWhenAttachingChildren(ContainerNode* node)
 {
     if (node->isShadowRoot())