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

third_party/WebKit/Source/core/html/HTMLShadowElement.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 44 matching lines @@
     ShadowRoot* containingRoot = containingShadowRoot();
     if (!containingRoot)
         return nullptr;
 
     updateDistribution();
 
     ShadowRoot* older = containingRoot->olderShadowRoot();
     if (!older || !older->isOpenOrV0() || older->shadowInsertionPointOfYoungerShadowRoot() != this)
         return nullptr;
 
-    ASSERT(older->isOpenOrV0());
+    DCHECK(older->isOpenOrV0());
     return older;
 }
 
 Node::InsertionNotificationRequest HTMLShadowElement::insertedInto(ContainerNode* insertionPoint)
 {
     if (insertionPoint->isConnected()) {
         // Warn if trying to reproject between user agent and author shadows.
         ShadowRoot* root = containingShadowRoot();
         if (root && root->olderShadowRoot() && root->type() != root->olderShadowRoot()->type()) {
             String message = String::format("<shadow> doesn't work for %s element host.", root->host().tagName().utf8().data());
             document().addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, WarningMessageLevel, message));
         }
     }
     return InsertionPoint::insertedInto(insertionPoint);
 }
 
 } // namespace blink