REGRESSION(r99076): WebKit pastes the trailing newline into a single-line text field

Source/WebCore/editing/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 273 matching lines @@
         if (!isNodeRendered(node) && !isTableStructureNode(node))
             unrendered.append(node);
 
     size_t n = unrendered.size();
     for (size_t i = 0; i < n; ++i)
         removeNode(unrendered[i]);
 }
 
 void ReplacementFragment::removeInterchangeNodes(Node* container)
 {
+    m_hasInterchangeNewlineAtStart = false;
+    m_hasInterchangeNewlineAtEnd = false;
+
     // Interchange newlines at the "start" of the incoming fragment must be
     // either the first node in the fragment or the first leaf in the fragment.
     Node* node = container->firstChild();
     while (node) {
         if (isInterchangeNewlineNode(node)) {
             m_hasInterchangeNewlineAtStart = true;
             removeNode(node);
             break;
         }
         node = node->firstChild();
@@ skipping 984 matching lines @@
         removeNodeAndPruneAncestors(nodeAfterInsertionPos);
 
     VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end);
 
     setEndingSelection(selectionAfterReplace);
 
     return true;
 }
 
 } // namespace WebCore