Include style tags when pasting HTML content.

third_party/WebKit/Source/core/editing/commands/ReplaceSelectionCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 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 767 matching lines @@
     return createVisiblePosition(m_startOfInsertedContent);
 }
 
 static void removeHeadContents(ReplacementFragment& fragment)
 {
     Node* next = nullptr;
     for (Node* node = fragment.firstChild(); node; node = next) {
         if (isHTMLBaseElement(*node)
             || isHTMLLinkElement(*node)
             || isHTMLMetaElement(*node)
-            || isHTMLStyleElement(*node)
             || isHTMLTitleElement(*node)) {
             next = NodeTraversal::nextSkippingChildren(*node);
             fragment.removeNode(node);
         } else {
             next = NodeTraversal::next(*node);
         }
     }
 }
 
 static bool followBlockElementStyle(const Node* node)
@@ skipping 958 matching lines @@
     visitor->trace(m_startOfInsertedContent);
     visitor->trace(m_endOfInsertedContent);
     visitor->trace(m_insertionStyle);
     visitor->trace(m_documentFragment);
     visitor->trace(m_startOfInsertedRange);
     visitor->trace(m_endOfInsertedRange);
     CompositeEditCommand::trace(visitor);
 }
 
 } // namespace blink